cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A new method to suppress the bias in polarized intensity
Creators: name: Müller, Peter
name: Beck, Rainer
name: Krause, Marita
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Computing polarised intensities from noisy data in Stokes U and Q suffers from a positive bias that should be suppressed. To develop a correction method that, when applied to maps, should provide a distribution of polarised intensity that closely follows the signal from the source. We propose a new method to suppress the bias by estimating the polarisation angle of the source signal in a noisy environment with help of a modified median filter. We then determine the polarised intensity, including the noise, by projection of the observed values of Stokes U and Q onto the direction of this polarisation angle. We show that our new method represents the true signal very well. If the noise distribution in the maps of U and Q is Gaussian, then in the corrected map of polarised intensity it is also Gaussian. Smoothing to larger Gaussian beamsizes, to improve the signal-to-noise ratio, can be done directly with our method in the map of the polarised intensity. Our method also works in case of non-Gaussian noise distributions. The maps of the corrected polarised intensities and polarisation angles are reliable even in regions with weak signals and provide integrated flux densities and degrees of polarisation without the cumulative effect of the bias, which especially affects faint sources. Features at low intensity levels like 'depolarisation canals' are smoother than in the maps using the previous methods, which has broader implications, for example on the interpretation of interstellar turbulence.
description: accepted for publication in Astronomy & Astrophysics
title: Главный храмовый праздник Алагирского общества
Creators: name: Сланов, А. А.
Publisher: name: Реноме
Year: 2022

description: В статье дается семантика главного храмового праздника Алагирского общества Северной Осетии Ичъына (Ичина), который Е. Г. Пчелина описывала еще в 30-х гг. XX в. В нашей работе приводится подборка культовых сооружений и праздников с аналогичным названием во всех исторических областях Осетии.
Physical quantities and arbitrariness in resolving quantum master equation
Creators: name: Batalin, Igor A.
name: Lavrov, Peter M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By proceeding with the idea that the presence of physical (BRST invariant) extra factors in the path integral is equivalent to taking into account explicitly the arbitrariness in resolving the quantum master equation, we consider the field-antifield quantization procedure both with the Abelian and the non-Abelian gauge fixing.
description: 7 pages, published version
title: Основные погребения майкопско-новосвободненской общности так называемого «галюгаевского типа» из Чеченской республики и РСО-Алания: общее и особенное
Creators: name: Бурков, С. Б.
Publisher: name: Реноме
Year: 2022

description: В статье приводятся сведения об общем и особенном в способах совершения погребения и в сопутствующих обрядово-церемониальных действиях по возведению двух основных (центральных) захоронений, входящих в круг древностей эпохи раннего бронзового века т. н. «галюгаевского типа», обнаруженных в Чеченской республике и РСО-­Алания. На основании анализа приведенных материалов и с привлечением дополнительных источников делается вывод о том, что ряд традиций, свойственных населению майкопско-новосвободненской общности (МНО), в измененном виде присутствует и на начальном этапе развитого бронзового века.
title: Carmina Sacra Honori Doctrina & virtute præstantissimi viri Iohannis Mollenbeccii Cum Conferrentur In eum Titulus & Insignia Doctorum in Utroque Jure à ... JCto Anthonio Matthæo in ... Academia Marpurgensi die 26. Aug. Anni 1619.
Creators: name: Mollenbeck, Johannes
Publisher: name: Philipps-Universität Marburg
Year: 2025
Subjects: Manuscripts & rare books
Handschriften, seltene Bücher
Festschrift
Hochschulschrift

description: Elektronische Reproduktion von: Carmina Sacra Honori Doctrina & virtute præstantissimi viri Iohannis Mollenbeccii Cum Conferrentur In eum Titulus & Insignia Doctorum in Utroque Jure à ... JCto Anthonio Matthæo in ... Academia Marpurgensi die 26. Aug. Anni 1619. - Marpurgi Cattorum : Ex Officina Rodolphi Hutvvelckeri, Anno MDCXIX. - 8 ungezählte Seiten. - 
Standort: Universität Marburg, Universitätsbibliothek. - 
Signatur: VIII B 331 db, 16. - 
Bemerkungen: Titel- und Schlussvignette, Titeleinrahmung (Holzschnitt). - 
Die Rückseite des Titelblatts ist unbedruckt . - 
(Hassiaca)

Digitalisiert 2024
Metallic vanadium disulfide nanosheets as a platform material for multifunctional electrode applications
Creators: name: Ji, Qingqing
name: Li, Cong
name: Wang, Jingli
name: Niu, Jingjing
name: Gong, Yue
name: Zhang, Zhepeng
name: Fang, Qiyi
name: Zhang, Yu
name: Shi, Jianping
name: Liao, Lei
name: Wu, Xiaosong
name: Gu, Lin
name: Liu, Zhongfan
name: Zhang, Yanfeng
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Nano-thick metallic transition metal dichalcogenides such as VS$_{2}$ are essential building blocks for constructing next-generation electronic and energy-storage applications, as well as for exploring unique physical issues associated with the dimensionality effect. However, such 2D layered materials have yet to be achieved through either mechanical exfoliation or bottom-up synthesis. Herein, we report a facile chemical vapor deposition route for direct production of crystalline VS$_{2}$ nanosheets with sub-10 nm thicknesses and domain sizes of tens of micrometers. The obtained nanosheets feature spontaneous superlattice periodicities and excellent electrical conductivities (~3$\times$10$^{3}$ S cm$^{-1}$), which has enabled a variety of applications such as contact electrodes for monolayer MoS$_{2}$ with contact resistances of ~1/4 to that of Ni/Au metals, and as supercapacitor electrodes in aqueous electrolytes showing specific capacitances as high as 8.6$\times$10$^{2}$ F g$^{-1}$. This work provides fresh insights into the delicate structure-property relationship and the broad application prospects of such metallic 2D materials.
description: 23 pages, 5 figues
Letter from Paul Nash to Herbert Read, November 17, 1934
Creators: name: Nash, Paul, 1889-1946
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Artists
valueUri: http://id.worldcat.org/fast/817559
subject: Nash, Paul, 1889-1946
valueUri: http://id.worldcat.org/fast/16173
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Read, Herbert, 1893-1968
valueUri: http://id.worldcat.org/fast/1754386
subject: Modernism (Art)
valueUri: http://id.worldcat.org/fast/1024442
subject: Authors
valueUri: http://id.worldcat.org/fast/821688

description: Part of a collection of correspondence between Herbert Read and Paul Nash (British surrealist painter, printmaker, war artist, and older brother to Paul Nash).
Improving HISQ propagator solves using deflation
Creators: name: Hostetler, Leon
name: Clark, M. A.
name: DeTar, Carleton
name: Gottlieb, Steven
name: Weinberg, Evan
Publisher: name: arXiv
Year: 2025
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Typically, the conjugate gradient (CG) algorithm employs mixed precision and even-odd preconditioning to compute propagators for highly improved staggered quarks (HISQ). This approach suffers from critical slowing down as the light quark mass is decreased to its physical value. Multigrid is one alternative to combat critical slowing down; however, it involves setup costs that are not always easy to amortize. We consider deflation, which can also remove critical slowing down, but incurs its own setup cost to compute eigenvectors. Results using the MILC and QUDA software libraries to generate eigenvectors and to perform deflated solves on lattices up to $144^3 \times 288$ (with lattice spacing 0.04 fm) and with a range of quark masses from the physical strange down to the physical light quark values will be presented. We compare with CG and comment on deflation versus multigrid.
description: 10 pages, 3 Figures; Talk presented at the 41st International Symposium on Lattice Field theory (LATTICE2024), July 28th - August 3rd, 2024, Liverpool, UK
Solving ill-posed inverse problems using iterative deep neural networks
Creators: name: Adler, Jonas
name: Öktem, Ozan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optimization and Control (math.OC)
subject: Artificial Intelligence (cs.AI)
subject: Functional Analysis (math.FA)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We propose a partially learned approach for the solution of ill posed inverse problems with not necessarily linear forward operators. The method builds on ideas from classical regularization theory and recent advances in deep learning to perform learning while making use of prior information about the inverse problem encoded in the forward operator, noise model and a regularizing functional. The method results in a gradient-like iterative scheme, where the "gradient" component is learned using a convolutional network that includes the gradients of the data discrepancy and regularizer as input in each iteration. We present results of such a partially learned gradient scheme on a non-linear tomographic inversion problem with simulated data from both the Sheep-Logan phantom as well as a head CT. The outcome is compared against FBP and TV reconstruction and the proposed method provides a 5.4 dB PSNR improvement over the TV reconstruction while being significantly faster, giving reconstructions of 512 x 512 volumes in about 0.4 seconds using a single GPU.
Constraining capability of $Z γh$ production at the ILC
Creators: name: Alam, Sher
name: Behera, Subhasish
name: Kumar, Satendra
name: Sahoo, Shibananda
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Higgs boson couplings with gauge bosons are probed through $e^-e^+ \rightarrow Z γh$ in an effective Lagrangian framework. For this study the beam polarization facility at the ILC along with the typical center-of-mass energy of 500 GeV is considered. The reach of the ILC with an integrated luminosity of 300 fb$^{-1}$ in the determination of $CP$-conserving parameters is obtained. Sensitivity of the probe of each of these couplings in the presence of other couplings is investigated. The most influential coupling parameters are $\bar c_W=-\bar c_B$. Other parameters of significant effect are $\bar c_{HW}$ and $\bar c_{HB}$. A detailed study of the various kinematic distributions represents possibilities to disentangle the effect of some of these couplings.
description: 18 pages, 44 figures. arXiv admin note: substantial text overlap with arXiv:1501.03283
Delayed or no feedback? - Gas outflows in Type 2 AGNs. III
Creators: name: Woo, Jong-Hak
name: Son, Donghoon
name: Bae, Hyun-Jin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present gas kinematics based on the [OIII] $λ$5007 line and their connection to galaxy gravitational potential, active galactic nucleus (AGN) energetics, and star formation, using a large sample of ~110,000 AGNs and star-forming (SF) galaxies at z<0.3. Gas and stellar velocity dispersions are comparable to each other in SF galaxies, indicating that the ionized gas kinematics can be accounted by the gravitational potential of host galaxies. In contrast, AGNs clearly show non-gravitational kinematics, which is comparable to or stronger than the virial motion caused by the gravitational potential. The [OIII] velocity-velocity dispersion (VVD) diagram dramatically expands toward high values as a function of AGN luminosity, implying that the outflows are AGN-driven, while SF galaxies do not show such a trend. We find that the fraction of AGNs with a signature of outflow kinematics, steeply increases with AGN luminosity and Eddington ratio. In particular, the majority of luminous AGNs presents strong non-gravitational kinematics in the [OIII] profile. AGNs with strong outflow signatures show on average similar specific star formation rate (SSFR) to that of starforming galaxies. In contrast, AGNs with weak or no outflows have an order of magnitude lower SSFR, suggesting that AGNs with current strong outflows do now show any negative AGN feedback and that it may take the order of a dynamical time to impact on star formation over galactic scales.
description: ApJ in press, very minor revision
Signatures of a 4$π$-periodic supercurrent in the voltage response of capacitively shunted topological Josephson junctions
Creators: name: Picó-Cortés, Jordi
name: Domínguez, Fernando
name: Platero, Gloria
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate theoretical aspects of the detection of Majorana bound states in Josephson junctions using the semiclassical RCSJ model of junction dynamics. The influence of a 4$π$-periodic supercurrent contribution can be detected through its effect on the width of the Shapiro steps and the Fourier spectrum of the voltage signal. We explain how the inclusion of a capacitance term results in a strong quenching of the odd steps when the junction is underdamped, and hence may be used to effectively detect Majorana bound states. Furthermore, in presence of capacitance the first and third steps are quenched to a different degree, as observed experimentally. We examine the emission spectrum of phase-locked solutions, showing that the presence of period-doubling may difficult the measurement of the 4$π$-periodic contribution from the Fourier spectrum. Finally, we study the voltage response in the quasiperiodic regime and indicate how the Fourier spectra and the first-return maps in this regime reflect the change of periodicity in the supercurrent.
description: 12 pages, 7 figures
Letter from Barbara Hepworth to Herbert Read, June 29, 1965
Creators: name: Hepworth, Barbara, 1903-1975
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Artists
valueUri: http://id.worldcat.org/fast/817559
subject: Artists--Correspondence
valueUri: http://id.worldcat.org/fast/817571
subject: Art historians
valueUri: http://id.worldcat.org/fast/815554
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Poets, English
valueUri: http://id.worldcat.org/fast/1067870
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Art movements
valueUri: http://id.worldcat.org/fast/815613
subject: Hepworth, Barbara, 1903-1975
valueUri: http://id.worldcat.org/fast/1898202
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Women artists
valueUri: http://id.worldcat.org/fast/1177159
subject: Read, Herbert, 1893-1968
valueUri: http://id.worldcat.org/fast/1754386

description: Part of a collection of letters to Sir Herbert Read from Dame Barbara Hepworth (English artist and sculptor and, along with Read, a member of the modern art movement Unit One founded by Paul Nash), that span the time period of 1940 to 1965 and discuss their artistic and literary endeavors, philosophical and political views, and personal lives. Hepworth is looking forward to having dinner with Read. Anthony and Patricia Lousada are invited.
title: ÐÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ²Ð¾ÑÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿Ð¾Ð´Ñ Ð¾Ð´Ð° Ð½Ð° Ð·Ð°Ð½ÑÑÐ¸ÑÑ Ð¿Ð¾ Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¾Ð¼Ñ ÑÐ·ÑÐºÑ Ñ Ð´ÐµÑÐµÐ¹ Ð´Ð¾ÑÐºÐ¾Ð»ÑÐ½Ð¾Ð³Ð¾ Ð²Ð¾Ð·ÑÐ°ÑÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Using a creative approach in Ðnglish classes for preschool children
Creators: name: Ð¢ÐµÑÐµÐ½ÑÑÐµÐ²Ð°, ÐÐ½Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: Ð¾Ð±ÑÑÐµÐ½Ð¸Ðµ Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¾Ð¼Ñ ÑÐ·ÑÐºÑ
Ð´ÐµÑÐ¸ Ð´Ð¾ÑÐºÐ¾Ð»ÑÐ½Ð¾Ð³Ð¾ Ð²Ð¾Ð·ÑÐ°ÑÑÐ°
ÑÐ²Ð¾ÑÑÐµÑÐºÐ¸Ð¹ Ð¿Ð¾Ð´Ñ Ð¾Ð´
ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ ÑÐ²Ð¾ÑÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿Ð¾Ð´Ñ Ð¾Ð´Ð°
ÑÐ²Ð¾ÑÑÐµÑÐºÐ°Ñ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÑ
English language teaching
preschool children
creative approach
effectiveness of creative approach
creative activity

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸ÑÑÐ»ÐµÐ´ÑÐµÑÑÑ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐ²Ð¾ÑÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð° Ð² Ð¾Ð±ÑÑÐµÐ½Ð¸Ð¸ Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¾Ð¼Ñ ÑÐ·ÑÐºÑ Ð´ÐµÑÐµÐ¹ Ð´Ð¾ÑÐºÐ¾Ð»ÑÐ½Ð¾Ð³Ð¾ Ð²Ð¾Ð·ÑÐ°ÑÑÐ°. Ð Ð¿ÐµÑÐ²Ð¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð°ÑÐ¿ÐµÐºÑÑ, Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð½ÑÐµ Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ Ð¿ÑÐ¸ÑÐ¾Ð»Ð¾Ð³Ð¸Ð¸ Ð´ÐµÑÐµÐ¹, ÐºÐ»ÑÑÐµÐ²ÑÑ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐµÐ¹ Ð´Ð¾ÑÐºÐ¾Ð»ÑÐ½Ð¾Ð³Ð¾ Ð²Ð¾Ð·ÑÐ°ÑÑÐ°, Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐ²Ð¾ÑÑÐµÑÐºÐ¾Ð¼Ñ Ð¿Ð¾Ð´ÑÐ¾Ð´Ñ Ð² Ð¾Ð±ÑÑÐµÐ½Ð¸Ð¸. ÐÑÐ¾ÑÐ°Ñ Ð³Ð»Ð°Ð²Ð° Ð²ÐºÐ»ÑÑÐ°ÐµÑ Ð² ÑÐµÐ±Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÑ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ° ÑÐ¿ÑÐ°Ð¶Ð½ÐµÐ½Ð¸Ð¹ Ð´Ð»Ñ Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ Ð½Ð°Ð²ÑÐºÐ°Ð¼ Ð³Ð¾Ð²Ð¾ÑÐµÐ½Ð¸Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°, Ð² ÑÐ¾Ð´Ðµ ÐºÐ¾ÑÐ¾ÑÐ¾Ð³Ð¾ Ð´ÐµÑÐ¸ Ð±ÑÐ»Ð¸ ÑÐ°Ð·Ð´ÐµÐ»ÐµÐ½Ñ Ð½Ð° Ð´Ð²Ðµ Ð³ÑÑÐ¿Ð¿Ñ: ÐºÐ¾Ð½ÑÑÐ¾Ð»ÑÐ½ÑÑ Ð¸ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÑ, Ð¸ Ð°Ð¿ÑÐ¾Ð±Ð°ÑÐ¸Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð². Ð ÐºÐ°ÑÐµÑÑÐ²Ðµ Ð¼ÐµÑÐ¾Ð´Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð±ÑÐ» Ð²ÑÐ±ÑÐ°Ð½ ÑÐ¾ÑÐ¼Ð¸ÑÑÑÑÐ¸Ð¹ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½Ñ, Ð² Ð¿ÑÐ¾ÑÐµÑÑÐµ ÐºÐ¾ÑÐ¾ÑÐ¾Ð³Ð¾ Ð±ÑÐ»Ð¾ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ ÑÑÐ°Ð´Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÑ Ð¼ÐµÑÐ¾Ð´Ð¾Ð² Ð¾Ð±ÑÑÐµÐ½Ð¸Ñ Ñ ÑÐ²Ð¾ÑÑÐµÑÐºÐ¸Ð¼ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð¾Ð¼ Ð² Ð¾Ð±ÑÑÐµÐ½Ð¸Ð¸ Ð´Ð¾ÑÐºÐ¾Ð»ÑÐ½Ð¸ÐºÐ¾Ð² Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¾Ð¼Ñ ÑÐ·ÑÐºÑ.Â 
description: This study investigates the effectiveness of implementing a creative approach in teaching English to preschool children. The first chapter discusses theoretical aspects related to the study of child psychology, key characteristics of early childhood, and the creative approach in education. The second chapter includes the development of a set of exercises for teaching speaking skills, as well as a description of the conducted experiment in which children were divided into two groups: control and experimental, and the testing of the obtained results. A formative experiment was chosen as the research method, during which a comparison was made between traditional teaching methods and the creative approach in teaching English to preschoolers.
Proceedings of the Workshop on Data Mining for Oil and Gas
Creators: name: Jorge, Alipio
name: Larrazabal, German
name: Guillen, Pablo
name: Lopes, Rui L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The process of exploring and exploiting Oil and Gas (O&G) generates a lot of data that can bring more efficiency to the industry. The opportunities for using data mining techniques in the "digital oil-field" remain largely unexplored or uncharted. With the high rate of data expansion, companies are scrambling to develop ways to develop near-real-time predictive analytics, data mining and machine learning capabilities, and are expanding their data storage infrastructure and resources. With these new goals, come the challenges of managing data growth, integrating intelligence tools, and analyzing the data to glean useful insights. Oil and Gas companies need data solutions to economically extract value from very large volumes of a wide variety of data generated from exploration, well drilling and production devices and sensors. Data mining for oil and gas industry throughout the lifecycle of the reservoir includes the following roles: locating hydrocarbons, managing geological data, drilling and formation evaluation, well construction, well completion, and optimizing production through the life of the oil field. For each of these phases during the lifecycle of oil field, data mining play a significant role. Based on which phase were talking about, knowledge creation through scientific models, data analytics and machine learning, a effective, productive, and on demand data insight is critical for decision making within the organization. The significant challenges posed by this complex and economically vital field justify a meeting of data scientists that are willing to share their experience and knowledge. Thus, the Worskhop on Data Mining for Oil and Gas (DM4OG) aims to provide a quality forum for researchers that work on the significant challenges arising from the synergy between data science, machine learning, and the modeling and optimization problems in the O&G industry.
title: Des Freyherrn C. Fr. von Moser Dienst-Jahre in dem Fürstl. Hessen-Darmstädtischen betreffend
Creators: name: Anonym
Publisher: name: Philipps-Universität Marburg
Year: 2025
Subjects: subject: Law
subject: FOS: Law
subject: Recht
subject: Streitschrift:jur.
subject: Kommentar: jur.

description: Elektronische Reproduktion von: Des Freyherrn C. Fr. von Moser Dienst-Jahre in dem Fürstl. Hessen-Darmstädtischen betreffend : Als erläuternde Anmerkungen und Berichtigungen zu des Herrn Professor Reus Schrift über diesen Gegenstand. - Bebenhausen : bey Christian Nikolai, dem jüngern, 1789. - 20 Seiten ; 4°. - 
Standort: Universität Marburg, Universitätsbibliothek. - 
Signatur: VIII B 331 db, 16. - 
Bemerkungen: Fraktur. - 
Bibliogr. Nachweis: VD18 14717050-ddd. - 
Umlaute mit übergestelltem "e" dargestellt. - 
(Hassiaca)

Digitalisiert 2024
Pinning effects on hot-electron vortex flow instability in superconducting films
Creators: name: Shklovskij, Valerij A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The hot-electron vortex flow instability in superconducting films in magnetic field $B$ at substrate temperature $T_0 \ll T_c$ is theoretically considered in the presence of pinning. The magnetic field dependence of the instability critical parameters (electric field $E^\ast$, current density $j^\ast$, resistivity $ρ^\ast$, power density $P^\ast$ and vortex velocity $v^\ast$) is derived for a cosine and a saw-tooth washboard pinning potential and compared with the results obtained earlier by M.\,Kunchur [Phys. Rev. Lett. \textbf{89} (2002) 137005] in the absence of pinning. It is shown that the $B$-behavior of $E^\ast$, $j^\ast$ and $ρ^\ast$ is monotonic in $B$, whereas the $B$-dependence of $v^\ast$ is quite different, namely $dv^\ast/dB$ may change its sign twice with decreasing $B$ as it was observed in some experiments. The simplest heat balance equation for electrons in low-$T_c$ superconducting films in the two-fluid approach is considered. It allows one to show that the instability critical temperature $T^\ast \approx 5T_c/6$ at $T_0 < T^\ast/2$ with $T^\ast$ independent of $B$.
description: 9 pages, 1 figure
Letter from David jones to Herbert Read, Thursday, March 11, 1954
Creators: name: Jones, David, 1895-1974
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Philosophers
valueUri: http://id.worldcat.org/fast/1060746
subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Art historians
valueUri: http://id.worldcat.org/fast/815554
subject: Read, Herbert, 1893-1968
valueUri: http://id.worldcat.org/fast/1754386
subject: Painters
valueUri: http://id.worldcat.org/fast/1050530
subject: Jones, David, 1895-1974
valueUri: http://id.worldcat.org/fast/1427255
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Anarchists
valueUri: http://id.worldcat.org/fast/808401
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172

description: Correspondence between Sir Herbert Read and David Jones (painter and modernist poet).
On Three Imaginary-time Path Integral Formulas with Magnetic Fields in Relativistic Quantum Mechanics
Creators: name: Ichinose, Takashi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81S40, 58D30, 47D08, 81Q10, 35S05, 60J65, 60J75

description: Three magnetic relativistic Schrödinger operators are considered, corresponding to the classical relativistic Hamiltonian symbol with both magnetic vector and electric scalar potentials. Path integral representations for the solutions of their respective imaginary-time relativistic Schrödinger equations, i.e. heat equations are given in two ways. The one is by means of the probability path space measure coming from the Lévy process concerned, and the other is through time-sliced approximation with Chernoff's theorem.
description: 26 pages; based on talk at RIMS Joint Research {\sl "Introductory Workshop on Path Integrals and Pseudo-Differential Operators"}, October 7--10, 2014
title: Carmen gratulatorium in gratiam et honorem ... iuvenis domini Nicolai Moteri Geraviensis, sacrarum literarum studiosi, cum ei gradus magisterii philosophici Francobergae, ...
Creators: name: Henckelius, Melchior
Publisher: name: Philipps-Universität Marburg
Year: 2025
Subjects: Manuscripts & rare books
Handschriften, seltene Bücher
Festschrift
Hochschulschrift

description: Elektronische Reproduktion von: Carmen Gratvlatorivm In Gratiam Et Honorem ... iuuenis domini Nicolai Moteri Gerauiensis, sacrarum literarum studiosi, cum ei gradus magisterij philosophici Francobergæ, ... , Rectore ... D. Hermanno Lersnero, Decano ... M. Theophilo Lonicero, Promotore ... Doctore Chunrado Matthæo Iureconsultißimo / ... scripsit M. Melchior Henckelius Gudensbergensis ... - Marpvrgi : Per Augustinum Colbium, Anno Domini Servatoris Nostri 1576. - -7 ungezählte Seiten. - 
Standort: Universität Marburg, Universitätsbibliothek. - 
Signatur: VIII B 331 db, 16. - 
Werktitel: Carmen gratulatorium in gratiam et honorem ... iuvenis domini Nicolai Moteri Geraviensis, sacrarum literarum studiosi, cum ei gradus magisterii philosophici Francobergae, ... , Rectore ... D. Hermanno Lersnero, Decano ... M. Theophilo Lonicero, Promotore ... Doctore Chunrado Matthæo iureconsultißimo. - 
Anmerkung: Die Rückseite des Titelblatts ist unbedruckt. - 
(Hassiaca)

Digitalisiert 2024
Modulations in martensitic Heusler alloys originate from nanotwin ordering
Creators: name: Gruner, Markus E.
name: Niemann, Robert
name: Entel, Peter
name: Pentcheva, Rossitza
name: Rössler, Ulrich K.
name: Nielsch, Kornelius
name: Fähler, Sebastian
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Heusler alloys exhibiting magnetic and martensitic transitions enable applications like magnetocaloric refrigeration and actuation based on the magnetic shape memory effect. Their outstanding functional properties depend on low hysteresis losses and low actuation fields. These are only achieved if the atomic positions deviate from a tetragonal lattice by periodic displacements. The origin of the so-called modulated structures is the subject of much controversy: They are either explained by phonon softening or adaptive nanotwinning. Here we used large-scale density functional theory calculations on the Ni2MnGa prototype system to demonstrate interaction energy between twin boundaries. Minimizing the interaction energy resulted in the experimentally observed ordered modulations at the atomic scale, it explained that a/b twin boundaries are stacking faults at the mesoscale, and contributed substantially to the macroscopic hysteresis losses. Furthermore, we found that phonon softening paves the transformation path towards the nanotwinned martensite state. This unified both opposing concepts to explain modulated martensite.
description: 21 manuscript pages with 7 figures
Four-phase Model of Corporate Branding: a Guideline
Creators: name: Dickmann, Tatjana
name: Stefanini, Gabriela
Publisher: name: My University
Year: 2012
Subjects: subject: Sirius
subject: Corporate Branding
subject: 658 - General Management
subject: 659 - Werbung & Public Releations (PR)

description: (Beitrag ist nur für FHNW Mitarbeitende sichtbar)
Electron emission perpendicular to polarization direction in laser assisted XUV atomic ionization
Creators: name: Gramajo, A. A.
name: Della Picca, R.
name: Arbó, D. G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a theoretical study of ionization of the hydrogen atom due to an XUV pulse in the presence of an IR laser with both fields linearly polarized in the same direction. In particular, we study the energy distribution of photoelectrons emitted perpendicularly to the polarization direction. By means of a very simple semiclassical model which considers electron trajectories born at different ionization times, the electron energy spectrum can be interpreted as the interplay of Intra and Intercycle interferences. The intracycle interference pattern stems from the coherent superposition of four electron trajectories giving rise to (i) interference of electron trajectories born during the same half cycle (Intrahalfcycle interference) and (ii) interference between electron trajectories born during the first half cycle with those born during the second half cycle (Interhalfcycle interference). The intercycle interference is responsible for the formation of the sidebands. We also show that the destructive interhalfcycle interference for the absorption and emission of an even number of IR laser photons is responsible for the characteristic sidebands in the perpendicular direction separated by twice the IR photon energy. We analyze the dependence of the energy spectrum on the laser intensity and the time delay between the XUV pulse and the IR laser. Finally, we show that our semiclassical simulations are in very good agreement with quantum calculations within the strong field approximation and the numerical solution of the time-dependent Schrödinger equation.
description: 22 pages,5 figures
Ein Bibliotheksnetz im Wandel: Überprüfung der Aufbau-Organisation und Erarbeitung eines Kompetenzmodells für Mitarbeitende
Creators: name: Rupp, Andreas
name: Steiner, Kevin
Publisher: name: My University
Year: 2014
Subjects: subject: Organigramm
subject: Kompetenzraster
subject: Personalentwicklung
subject: Umsetzungsprozess
subject: Organisationsstruktur
subject: 330 - Wirtschaft
subject: 650 - Management

description: Aus einer veralteten Bibliothek entsteht ein top moderner Neubau. Die GGG Stadtbibliothek wu?nscht sich nebst den materiellen Veränderungen die Entwicklung eines neuen Organigramms, eines Kompetenzrasters, sowie neue Ideen, mit denen zuku?nftig neues Personal gewonnen werden kann. (Beitrag ist nur für FHNW Mitarbeitende sichtbar)
Oeuvres du marquis de Villette
Creators: name: Villette, Charles-Michel, Marquis De, 1736-1793
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Correspondence
valueUri: http://id.worldcat.org/fast/2003288
subject: Papermaking
valueUri: http://id.worldcat.org/fast/1052642
subject: Voltaire, 1694-1778
valueUri: http://id.worldcat.org/fast/61549
subject: Paper
valueUri: http://id.worldcat.org/fast/1052348

description: Charles-Michel Villette had his writings (chiefly verse) published by Léorier Delisle using his vegetable paper. This is the first book printed in Europe on paper made from material other than cotton or linen. A note on the verso of the half title page notes, "Ce volume est imprimé sur le papier d'écorce de tilleul". [This volume is printed on linden bark paper or Part of the issue was printed on marshmallow paper.]. Published by P.A. Léorier Delisle, who made the paper at the mill at Langlée, near Montargis; printed by Couret de Villeneuve, Orléans. Includes an introductory piece about papermaking by Léorier Delisle. "Lettres diverses" (chiefly correspondence with Voltaire): pages 114-153. Along with 20 leaves of plates that are samples of Léorier Delisle's experimental paper made from various plant materials: marshmallow, nettles, hops, moss, reeds, conferva (3 kinds), burdock, burdock-colt's foot, and thistles; quack-grass root; hazel wood and spindle wood; and bark of willow, spindle tree, oak, poplar, osier and elm. Also included are several enclosures with details about the book, its origins, and its paper.
LINGUOCULTURAL ANALYSIS OF ZOOANTHROPONYMS IN KARAKALPAK EPICS
Creators: name: Daniyarova, Zamira
Publisher: name: Zenodo
Year: 2024

description: In any culture, a person's name serves as a socio-cultural sign. The system of names, which has a long history, bears the traces of nationality of the people. Anthroponyms have a clear national and cultural significance, as they ensure the preservation of not only linguistic but also historical and cultural information. Anthroponymy is considered as a tool to reflect the national culture of the whole population.
Markt- und Kommunikationsstrategie dargestellt am Beispiel einer Tanzschule
Creators: name: Müller, Isabelle
name: Treier, Claudia
Publisher: name: My University
Year: 2013
Subjects: subject: Marktstrategie
subject: Kommunikationsstrategie
subject: Tanzschule
subject: Segmenting
subject: Targeting
subject: Positioning
subject: Konkurrenzanalyse
subject: Kundenumfrage
subject: 330 - Wirtschaft
subject: 659 - Werbung & Public Releations (PR)

description: Eine Tanzschule wird anhand STP-Prozess im Markt positioniert. Die Erstellung und Auswertung einer Kundenumfrage zeigt die spezifischen Bedürfnisse und Wünsche der Kundschaft auf. Diverse Vorschläge für weitere Marketingaktivitäten vervollständigen die Marktstrategie. (Beitrag ist nur für FHNW Mitarbeitende sichtbar)
An X-ray survey of the 2Jy sample. II: X-ray emission from extended structures
Creators: name: Mingo, B.
name: Hardcastle, M. J.
name: Ineson, J.
name: Mahatma, V.
name: Croston, J. H.
name: Dicken, D.
name: Evans, D. A.
name: Morganti, R.
name: Tadhunter, C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The 2Jy sample is a survey of radio galaxies with flux densities above 2 Jy at 2.7 GHz. As part of our ongoing work on the southern subset of 2Jy sources, in paper I of this series we analysed the X-ray cores of the complete 2Jy sample with redshifts 0.05
description: 18 pages, 3 tables, 29 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society (MNRAS)
title: Letztes Ehren-Gedächtniß Der Hoch-Edlen Hoch-Ehr- und Tugendreichen Frauen Philippinæ gebohrnen Prickinn Des Hoch-Edlen Vest- und Hochgelahrten Herrn Joh. David Motz Hoch-Fürstl. Hessischen Regierungs-Raths allhier Ehe-Liebsten Seel
Creators: name: Crollius, Johann Lorenz
Publisher: name: Philipps-Universität Marburg
Year: 2025
Subjects: Leichenpredigt
Nachruf
Christian theology
Theologie, Christentum

description: Elektronische Reproduktion von: Letztes Ehren-Gedächtniß/ Der Hoch-Edlen/ Hoch-Ehr- und Tugendreichen Frauen Philippinæ gebohrnen Prickinn/ Des Hoch-Edlen/ Vest- und Hochgelahrten Herrn Joh. David Motz/ Hoch-Fürstl. Hessischen Regierungs-Raths allhier Ehe-Liebsten Seel. - Marburg : Druckts J. Henrich Stock/ Hoch-Fürstl. Hess. Cantzley Buchdr., [1699]. - 8 ungezählte Seiten ; 4°. - 
Standort: Universität Marburg, Universitätsbibliothek. - 
Signatur: VIII B 331 db, 16. - 
Fingerprint: n-am e-n- e-r, i,NÆ C 1699Q. - 
Anmerkung: Verfasser zu Textbeginn genannt. - 
Signaturformel: A4. - 
Erscheinungsjahr nach der Datierung der Gelegenheitsschrift am Textende angenommen. - 
Umlaute mit übergestelltem "e" dargestellt. - 
Die Rückseite des Titelblatts ist unbedruckt
Titelvgnette (Holzschnitt). - 
Bibliographischer Nachweis: Verzeichnis der im deutschen Sprachbereich erschienenen Drucke des 17. Jahrhunderts, 1:030500U. - 
(Hassiaca)

Digitalisiert 2024
Tax Efficient Supply Chain Management
Creators: name: Schreiber, Bruce
name: Henny, Matthias
Publisher: name: My University
Year: 2013
Subjects: subject: Business Processes
subject: Reengineering
subject: Tax optimization
subject: 330 - Wirtschaft
subject: 000 - Allgemeines, Wissenschaft

description: Tax efficient supply chain management (TESCM) has become an essential approach within globally operating companies and as a result, the demand for tailored end-to-end solutions for all kinds of clients has risen. (Beitrag ist nur für FHNW Mitarbeitende sichtbar)
Weak admissibility, primitivity, o-minimality, and Diophantine approximation
Creators: name: Widmer, Martin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: Dynamical Systems (math.DS)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: Primary 11H06, 11P21, 11J20 11K60, Secondary 03C64, 22F30

description: We generalise M. M. Skriganov's notion of weak admissibility for lattices to include standard lattices occurring in Diophantine approximation and algebraic number theory, and we prove estimates for the number of lattice points in sets such as aligned boxes. Our result improves on Skriganov's celebrated counting result if the box is sufficiently distorted, the lattice is not admissible, and, e.g., symplectic or orthogonal. We establish a criterion under which our error term is sharp, and we provide examples in dimensions $2$ and $3$ using continued fractions. We also establish a similar counting result for primitive lattice points, and apply the latter to the classical problem of Diophantine approximation with primitive points as studied by Chalk, Erdős, and others. Finally, we use o-minimality to describe large classes of sets
description: Comments are welcome
Particle interactions mediated by dynamical networks: assessment of macroscopic descriptions
Creators: name: Barré, Julien
name: de la Plata, José Antonio Carrillo
name: Degond, Pierre
name: Peurichard, Diane
name: Zatorska, Ewelina
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We provide a numerical study of the macroscopic model of [3] derived from an agent-based model for a system of particles interacting through a dynamical network of links. Assuming that the network remodelling process is very fast, the macroscopic model takes the form of a single aggregation diffusion equation for the density of particles. The theoretical study of the macroscopic model gives precise criteria for the phase transitions of the steady states, and in the 1-dimensional case, we show numerically that the stationary solutions of the microscopic model undergo the same phase transitions and bifurcation types as the macroscopic model. In the 2-dimensional case, we show that the numerical simulations of the macroscopic model are in excellent agreement with the predicted theoretical values. This study provides a partial validation of the formal derivation of the macroscopic model from a microscopic formulation and shows that the former is a consistent approximation of an underlying particle dynamics, making it a powerful tool for the modelling of dynamical networks at a large scale.
Buchhaltung der Zukunft Einführung eines Kreditorenworkflows am Beispiel der Berufsfachschule BBB
Creators: name: Juras, Ivana
Publisher: name: My University
Year: 2014
Subjects: subject: Geschäftsprozesse
subject: Workflow
subject: Anforderungsdefinition
subject: Softwaretest
subject: Wirtschaftlichkeitsermittlung
subject: 330 - Wirtschaft
subject: 650 - Management

description: Der papierbasierte Freigabeprozess für Kreditorenrechnungen an der Berufsfachschule BBB ist durch lange Laufzeiten geprägt. Zur Verkürzungen dieser Laufzeiten wird die BBB den Prozess zukünftig mit einem Informationssystem unterstützen. (Beitrag ist nur für FHNW Mitarbeitende sichtbar)
Spectral statistics of the uni-modular ensemble
Creators: name: Joyner, Christopher H.
name: Smilansky, Uzy
name: Weidenmüller, Hans A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We investigate the spectral statistics of Hermitian matrices in which the elements are chosen uniformly from U (1), called the uni-modular ensemble (UME), in the limit of large matrix size. Using three complimentary methods; a supersymmetric integration method, a combinatorial graph-theoretical analysis and a Brownian motion approach, we are able to derive expressions for 1/N corrections to the mean spectral moments and also analyse the fluctuations about this mean. By addressing the same ensemble from three different point of view, we can critically compare their relative advantages and derive some new results.
description: 35 pages, 3 figures
Letter from David Jones to Herbert Read, October 03, 1961
Creators: name: Jones, David, 1895-1974
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Poets
valueUri: http://id.worldcat.org/fast/1067778
subject: Authors, English--Correspondence
valueUri: http://id.worldcat.org/fast/821953
subject: Philosophers
valueUri: http://id.worldcat.org/fast/1060746
subject: Jones, David, 1895-1974
valueUri: http://id.worldcat.org/fast/1427255
subject: Read, Herbert, 1893-1968
valueUri: http://id.worldcat.org/fast/1754386
subject: Literature, Modern
valueUri: http://id.worldcat.org/fast/1000172
subject: Painters
valueUri: http://id.worldcat.org/fast/1050530
subject: Modernism (Literature)
valueUri: http://id.worldcat.org/fast/1024455
subject: Authors
valueUri: http://id.worldcat.org/fast/821688
subject: Art historians
valueUri: http://id.worldcat.org/fast/815554
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Anarchists
valueUri: http://id.worldcat.org/fast/808401

description: Correspondence between Sir Herbert Read and David Jones (painter and modernist poet).
Structure-Dynamics Relation in Physically-Plausible Multi-Chromophore Systems
Creators: name: Knee, George C.
name: Rowe, Patrick
name: Smith, Luke D.
name: Troisi, Alessandro
name: Datta, Animesh
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Biological Physics (physics.bio-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study a large number of physically-plausible arrangements of chromophores, generated via a computational method involving stochastic real-space transformations of a naturally occurring `reference' structure, illustrating our methodology using the well-studied Fenna-Matthews-Olson complex (FMO). To explore the idea that the natural structure has been tuned for efficient energy transport we use an atomic transition charge method to calculate the excitonic couplings of each generated structure and a Lindblad master equation to study the quantum transport of an exciton from a `source' to a `drain' chromophore. We find significant correlations between structure and transport efficiency: High-performing structures tend to be more compact and, among those, the best structures display a certain orientation of the chromophores, particularly the chromophore closest to the source-to-drain vector. We conclude that, subject to reasonable, physically-motivated constraints, the FMO complex is highly attuned to the purpose of energy transport, partly by exploiting these structural motifs.
description: 7+6pp, 3+10 figures. Accepted version. Data available at http://doi.org/10.6084/m9.figshare.c.3784874.v1
Effect of graphene substrate on the spectroscopic properties of photovoltaic molecules: role of the in-plane and out-of-plane pi-bonds
Creators: name: Wawrzyniak-Adamczewska, M.
name: Wierzbowska, M.
name: Melendez, J. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic structure of pentacene decorated with dipole groups (d-pentacene) and adsorbed onto a graphene substrate has been studied within the density functional theory. Three reference configurations have been considered, namely the ideal molecule without distortions, the actual molecule including intramolecular distortions and the molecule adsorbed onto graphene. Calculations show a noticeable charge redistribution within the d-pentacene + graphene system due to molecular distortion, as well as the formation of weak $π$-bonds between the molecule and the substrate. Additionally, the effect of the chemical modification of the terminal saturation with --H by --OH and =O is checked to explore the possibility of "levels engineering". The imaginary part of the dielectric function of d-pentacene in the ideal and distorted conformations and the molecule adsorbed at graphene were calculated within the random phase approximation. Results show that, even though molecular distortions change apreciably the absorption spectrum of isolated d-pentacene, the adsorbed molecule exhibits an optical spectrum which mimics quite much that of single graphene.
Mean first-passage time of an anisotropic diffusive searcher
Creators: name: Levernier, Nicolas
name: Bénichou, Olivier
name: Voituriez, Raphaël
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider an anisotropic needle-like Brownian particle with nematic symmetry confined in a $2D$ domain. For this system, the coupling of translational and rotational diffusion makes the process ${\bf x} (t)$ of the positions of the particle non Markovian. Using scaling arguments, a Gaussian approximation and numerical methods, we determine the mean first passage time $\langle\mathbf{T}\rangle$ of the particle to a target of radius $a$ and show in particular that $\langle\mathbf{T}\rangle \sim a^{-1/2}$ for $a\to 0$, in contrast with the classical logarithmic divergence obtained in the case of an isotropic $2D$ Brownian particle.