cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pathway engineering and synthetic transgene design to produce diverse fragrant sesquiterpenoids from the green microalga Chlamydomonas reinhardtii
Creators: name: Gutiérrez, Sergio
name: Overmans, Sebastian
name: Wellman, Gordon
name: Lauersen, Kyle J.
Publisher: name: KAUST Research Repository
Year: 2023

description: Terpenoids are a diverse class of natural compounds with many applications, such as flavors and fragrances. Sesquiterpenoids (C15) are fragrant components of incenses and perfumes, which are widely used in the Middle East region. Some, however, are acquired unsustainably from slow-growing plants such as Aquilaria sp. trees, members of which are considered endangered. Alternative sources of these compounds are desired, and heterologous production of sesquiterpenoids in engineered microbes is a favorable alternative. The photosynthetic model green microalga Chlamydomonas reinhardtii has recently been used as an alternative cell factory to generate heterologous sesquiterpenoids from CO2 as a carbon source. Our goal in this work was to investigate production of a range of heterologous sesquiterpenoids in C. reinhardtii while modifying its native isoprenoid pathway to channel carbon flow towards these products. A strategy of terpenoid pathway modification was employed wherein a β-carotene ketolase (BKT) was expressed to perturb carotenoid biosynthesis and the host squalene synthase (SQS) was knocked down to reduce metabolic pull on FPP. The modifications resulted in a synergistic effect that increased patchoulol (C15-OH) production from 191 ± 25 μg/L to 2330 ± 230 μg/L using a cytosolic localized patchoulol synthase. Using algal optimized synthetic transgene designs, 22 sesquiterpenoid synthases from various species were then systematically expressed and compared in this strain to produce aristolochene (n=4), guaiene (n=6), santalene (n=3), valencene (n=1), valerianol (n=1), zizaene (n=2), cadinol (n=1), and bisabolol (n=1). The findings suggest that the alga can be engineered to possess a sizable pool of FPP to synthesize non-native sesquiterpenes. For each SqTPS isoform, variable sesquiterpenoid yields were observed and the optimal synthase identified for each product. These results indicated that C. reinhardtii can be used as a green cell factory to generate heterologous high-value specialty sesquiterpenoids through metabolic engineering.
Great Optically Luminous Dropout Research Using Subaru HSC (GOLDRUSH). I. UV Luminosity Functions at $z \sim 4-7$ Derived with the Half-Million Dropouts on the 100 deg$^2$ Sky
Creators: name: Ono, Yoshiaki
name: Ouchi, Masami
name: Harikane, Yuichi
name: Toshikawa, Jun
name: Rauch, Michael
name: Yuma, Suraphong
name: Sawicki, Marcin
name: Shibuya, Takatoshi
name: Shimasaku, Kazuhiro
name: Oguri, Masamune
name: Willott, Chris
name: Akhlaghi, Mohammad
name: Akiyama, Masayuki
name: Coupon, Jean
name: Kashikawa, Nobunari
name: Komiyama, Yutaka
name: Konno, Akira
name: Lin, Lihwai
name: Matsuoka, Yoshiki
name: Miyazaki, Satoshi
name: Nagao, Tohru
name: Nakajima, Kimihiko
name: Silverman, John
name: Tanaka, Masayuki
name: Taniguchi, Yoshiaki
name: Wang, Shiang-Yu
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the UV luminosity functions (LFs) at $z\sim 4$, $5$, $6,$ and $7$ based on the deep large-area optical images taken by the Hyper Suprime-Cam (HSC) Subaru strategic program (SSP). On the 100 deg$^2$ sky of the HSC SSP data available to date, we make enormous samples consisting of a total of 579,565 dropout candidates at $z\sim 4-7$ by the standard color selection technique, 358 out of which are spectroscopically confirmed by our follow-up spectroscopy and other studies. We obtain UV LFs at $z \sim 4-7$ that span a very wide UV luminosity range of $\sim 0.002 - 100 \, L_{\rm UV}^\ast$ ($-26 < M_{\rm UV} < -14$ mag) by combining LFs from our program and the ultra-deep Hubble Space Telescope legacy surveys. We derive three parameters of the best-fit Schechter function, $ϕ^\ast$, $M_{\rm UV}^\ast$, and $α$, of the UV LFs in the magnitude range where the AGN contribution is negligible, and find that $α$ and $ϕ^\ast$ decrease from $z\sim 4$ to $7$ with no significant evolution of $M_{\rm UV}^\ast$. Because our HSC SSP data bridge the LFs of galaxies and AGNs with great statistical accuracy, we carefully investigate the bright end of the galaxy UV LFs that are estimated by the subtraction of the AGN contribution either aided with spectroscopy or the best-fit AGN UV LFs. We find that the bright end of the galaxy UV LFs cannot be explained by the Schechter function fits at $> 2 σ$ significance, and require either double power-law functions or modified Schechter functions that consider a magnification bias due to gravitational lensing.
description: 30 pages, 13 figures, accepted for publication in PASJ special issue
Building a living library from the Kingdom of Saudi Arabia
Creators: name: Freitas, Barbara Bastos
name: Barsotti, Adriana
name: Lauersen, Kyle J.
Publisher: name: KAUST Research Repository
Year: 2023

description: Algal biodiversity is still underexplored and requires increased attention as each isolate may hold unique value for different human-use applications. As the Kingdom of Saudi Arabia (KSA) is looking to diversify its sustainable technologies, the development of technologies using, and bio-prospecting of, local algae strains may hold value for a number of industries and enhance resource circularity. Sourcing local strains is of importance for their adaptedness to the sometimes harsh environments of this region in outdoor cultivation concepts and to avoid issues of species invasiveness or risks to biodiversity. The abiotic factors of this region, high irradiance, high temperatures, and minimal water sources have likely yielded microbes with specialized biochemistries with adaptive features like tolerance to UV and light radiation as well as high temperatures. Algal biodiversity has been generally underexplored in the KSA. This work presents our efforts to isolate, cultivate, characterize and generate a living library of KSA species that can be grown in salt water or waste(fresh)water resources. We aim to establish an algae library that can be accessed by stakeholders who wish to conduct work with algae in KSA. Samples have been collected from hot springs, volcanic sites, desert soil, cement production facilities, aquaculture farms, and the Red Sea. Isolation protocols to date include plate-spreading and serial dilution in ambient temperatures, 25 °C and ~100 µE to isolate monocultures. Greater than fifty individual isolates have been achieved since Spring 2022. Isolates include green algae, cyanobacteria, Euglenophyta, and diatoms. Preliminary growth data has been obtained for the local context in photobioreactors programed to emulate Spring, Summer, Winter, and Fall weather conditions at the mid Red Sea coast in addition to controls. Our living library and preliminary growth data highlight the unexplored biodiversity of algae and lay a foundation for next-stage circular resource bioprocesses in this region.
Quark Wigner Distributions Using Light-Front Wave Functions
Creators: name: More, Jai
name: Mukherjee, Asmita
name: Nair, Sreeraj
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The quasi-probabilistic Wigner distributions are the quantum mechanical analog of the classical phase-space distributions. We investigate quark Wigner distributions for a quark state dressed with a gluon, which can be thought of as a simple composite and relativistic spin-1/2 state with a gluonic degree of freedom. We calculate various polarization configurations, namely unpolarized, longitudinally polarized and transversely polarized quark and the target state using light-front wave functions in this model. At leading twist, one can define 16 quark Wigner distributions, however, we obtain only 8 independent non-zero Wigner distributions in our model. We compare our results with other model calculations for the proton.
description: 21 pages, 5 figures, version published by Phys. Rev. D
Magnetoplasmon spectrum for asymmetric off-plane structure of dissipative 2D system
Creators: name: Cheremisin, M. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The rigorous analysis of textbook result(Chiu and Quinn, 1974) gives unexpectedly the dramatic change of magnetoplasmon spectrum taking into account both the arbitrary dissipation and asymmetric off-plane structure of 2D system. For given wave vector the dissipation enhancement leads to decrease(increase) of magnetoplasmon frequency at low(high) magnetic field. At certain range of disorder the purely relaxational mode appears in magnetoplasmon spectrum. In strong magnetic fields the magnetoplasmon frequency falls to cyclotron resonance line even in presence of finite dissipation. The recent observation of 2D magnetoplasmon spectrum is consistent with our findings.
description: 4+ pages, 3 figures
title: Fachgespräch: „Gesunderhaltung von Pflanzen im Ökolandbau im Spannungsfeld von Grundwerteorientierung, Innovation und regulatorischen Hemmnissen“, Berlin-Dahlem, 20. November 2014
Creators: name: Kühne, Stefan
name: Friedrich, Britta
name: Röhrig, Peter
Publisher: name: Julius Kühn-Institut
Year: 2015

description: Berichte aus dem Julius Kühn-Institut 180
Freezing Optical Rogue Waves by Zeno Dynamics
Creators: name: Bayindir, Cihan
name: Ozaydin, Fatih
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the Zeno dynamics of the optical rogue waves. Considering their usage in modeling rogue wave dynamics, we analyze the Zeno dynamics of the Akhmediev breathers, Peregrine and Akhmediev-Peregrine soliton solutions of the nonlinear Schrodinger equation. We show that frequent measurements of the wave inhibits its movement in the observation domain for each of these solutions. We analyze the spectra of the rogue waves under Zeno dynamics. We also analyze the effect of observation frequency on the rogue wave profile and on the probability of lingering of the wave in the observation domain. Our results can find potential applications in optics including nonlinear phenomena.
Asymmetric percolation drives a double transition in sexual contact networks
Creators: name: Allard, Antoine
name: Althouse, Benjamin M.
name: Scarpino, Samuel V.
name: Hébert-Dufresne, Laurent
Publisher: name: arXiv
Year: 2017
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Zika virus (ZIKV) exhibits unique transmission dynamics in that it is concurrently spread by a mosquito vector and through sexual contact. We show that this sexual component of ZIKV transmission induces novel processes on networks through the highly asymmetric durations of infectiousness between males and females -- it is estimated that males are infectious for periods up to ten times longer than females -- leading to an asymmetric percolation process on the network of sexual contacts. We exactly solve the properties of this asymmetric percolation on random sexual contact networks and show that this process exhibits two epidemic transitions corresponding to a core-periphery structure. This structure is not present in the underlying contact networks, which are not distinguishable from random networks, and emerges because of the asymmetric percolation. We provide an exact analytical description of this double transition and discuss the implications of our results in the context of ZIKV epidemics. Most importantly, our study suggests a bias in our current ZIKV surveillance as the community most at risk is also one of the least likely to get tested.
description: 5 pages, 4 figures (Supporting Information: 11 pages, 4 figures)
Semiotic multiplicities and contradictions in science learning
Creators: name: CHACHLIOUTAKI, MARIA-ELENI
name: PANTIDOS (Greece), PANAGIOTIS
Publisher: name: Review of Science, Mathematics and ICT Education
Year: 2023
Subjects: Science education, mechanical equilibrium, semiotic multiplicities, semiotic contradictions, science learning

description: In this paper, we explore the notion of situated and modally defined learning, aiming to identify and describe action structures as thought structures. Our focus is on investigating modal patterns that emerge during the learning process, using a case study involving a 5-year-old preschool child's conceptualization of mechanical equilibrium. To achieve this, we designed three identical tests, each eliciting different modal responses from the student. These tests comprised three tasks that varied semiotically. They were administered at different time points and interspersed with two distinct teaching interventions. The findings revealed that during the conceptualization of mechanical equilibrium, the student displayed semiotic multiplicities, employing various modalities and semiotic systems to represent the same conceptual dimensions of the phenomenon. Interestingly, the student's thinking exhibited regressions between compatible and non-compatible conceptualizations in line with school knowledge, leading to apparent contradictions. These observations highlight the concept of variability and underscore how multiplicities and contradictions are integral components of the dynamic learning process.
description: Review of Science, Mathematics and ICT Education, Forthcoming papers
Fly Brain Anatomy: FlyLight Gen1 and Split-GAL4 Imagery
Creators: name: Meissner, Geoffrey
name: Nern, Aljoscha
name: Dorman, Zachary
name: DePasquale, Gina M
name: Forster, Kaitlyn
name: Gibney, Theresa
name: Hausenfluck, Joanna H
name: He, Yisheng
name: Iyer, Nirmala
name: Jeter, Jennifer
name: Johnson, Lauren
name: Johnston, Rebecca M
name: Lee, Kelley
name: Melton, Brian
name: Yarbrough, Brianna
name: Zugates, Christopher T
name: Clements, Jody
name: Goina, Cristian
name: Otsuna, Hideo
name: Rokicki, Konrad
name: Svirskas, Robert
name: Aso, Yoshinori
name: Card, Gwyneth M.
name: Dickson, Barry J
name: Ehrhardt, Erica
name: Goldammer, Jens
name: Ito, Masayoshi
name: Kainmueller, Dagmar
name: Korff, Wyatt
name: Mais, Lisa
name: Minegishi, Ryo
name: Namiki, Shigehiro
name: Rubin, Gerald M.
name: Sterne, Gabriella
name: Wolff, Tanya
name: Malkesman, Oz
name: FlyLight Project Team
Publisher: name: Janelia Research Campus
Year: 2022
Subjects: Neurogenetics
Animal neurobiology

description: This data set, made available by Janelia's FlyLight Project Team, consists of central nervous system fluorescence images of Drosophila melanogaster driver lines, aligned to standard templates, and stored in formats suitable for rapid searching in the cloud. The above link leads to raw confocal image data in Zeiss LSM format, along with H5J-compressed alignments to JRC2018, movies, maximum intensity projections (MIPs), and color-depth-encoded maximum intensity projections (CDMs). Data is organized by image collection and by line, and is intended for bulk or programmatic access. To browse image data by release, line, and biological sample, please visit the following sites. Full expression patterns of Generation 1 GAL4 and LexA lines: https://flweb.janelia.org/cgi-bin/flew.cgi Single neuron Multicolor Flp-out (MCFO) images of Gen1 GAL4 lines: https://gen1mcfo.janelia.org/cgi-bin/gen1mcfo.cgi Full and MCFO images of more precise split-GAL4 lines: https://splitgal4.janelia.org/cgi-bin/splitgal4.cgi To search across the above image collections and Janelia FlyEM electron microscope images by neuron shape, please visit https://neuronbridge.janelia.org For more information about FlyLight, please visit https://www.janelia.org/project-team/flylight
Lie point symmetry analysis of a second order differential equation with singularity
Creators: name: Güngör, F.
name: Torres, P. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: By using Lie symmetry methods, we identify a class of second order nonlinear ordinary differential equations invariant under at least one dimensional subgroup of the symmetry group of the Ermakov-Pinney equation. In this context, nonlinear superposition rule for second order Kummer-Schwarz equation is rediscovered. Invariance under one-dimensional symmetry group is also used to obtain first integrals (Ermakov-Lewis invariants). Our motivation is a type of equations with singular term that arises in many applications, in particular in the study of general NLS (nonlinear Schrödinger) equations.
description: 17 pages, final version
Circumstellar disks and outflows in turbulent molecular cloud cores: possible formation mechanism for misaligned systems
Creators: name: Matsumoto, Tomoaki
name: Machida, Masahiro N.
name: Inutsuka, Shu-ichiro
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the formation of circumstellar disks and outflows subsequent to the collapse of molecular cloud cores with the magnetic field and turbulence. Numerical simulations are performed by using an adaptive mesh refinement to follow the evolution up to $\sim 1000$~yr after the formation of a protostar. In the simulations, circumstellar disks are formed around the protostars; those in magnetized models are considerably smaller than those in nonmagnetized models, but their size increases with time. The models with stronger magnetic field tends to produce smaller disks. During evolution in the magnetized models, the mass ratios of a disk to a protostar is approximately constant at $\sim 1-10$\%. The circumstellar disks are aligned according to their angular momentum, and the outflows accelerate along the magnetic field on the $10-100$~au scale; this produces a disk that is misaligned with the outflow. The outflows are classified into two types: a magneto-centrifugal wind and a spiral flow. In the latter, because of the geometry, the axis of rotation is misaligned with the magnetic field. The magnetic field has an internal structure in the cloud cores, which also causes misalignment between the outflows and the magnetic field on the scale of the cloud core. The distribution of the angular momentum vectors in a core also has a non-monotonic internal structure. This should create a time-dependent accretion of angular momenta onto the circumstellar disk. Therefore, the circumstellar disks are expected to change their orientation as well as their sizes in the long-term evolutions.
description: 14 pages, 15 figures, Accepted by ApJ
Assessment of availability, utilization of ICT as alternative for implementation of Research Methodology curriculum in University of Calabar amid COVI 19 pandemic psychosocial implementations.pdf
Creators: name: Orji, Evelyn   Ijeoma
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: The present study focused on assessing availability and utilization of ICT as alternative for implementation of research methodology curriculum in the faculty of education, university of Calabar amid COVID-19 pandemic aside the psychosocial implementations for teaching and learning. Survey research design was adopted for this study was conducted in university of Calabar. Population of study consisted of the officers and lectures and 3 faculties of education. The study sample consisted of 85 respondents…
Fermi-LAT high $z$ AGN and the Extragalactic Background Light
Creators: name: Armstrong, Thomas
name: Brown, Anthony M.
name: Chadwick, Paula M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Observations of distant gamma-ray sources are hindered by the presence of the extragalactic background light (EBL). In order to understand the physical processes that result in the observed spectrum of sources, it is imperative that a good understanding of the EBL is included. In this work, an investigation into the imprint of the EBL on the observed spectra of high redshift Fermi-LAT AGN is presented. By fitting the spectrum below $\sim$10 GeV, an estimation of the un-absorbed intrinsic source spectrum is obtained; by applying this spectrum to data up to 300 GeV, it is then possible to derive a scaling factor for different EBL models. A second approach uses 5 sources (PKS 0426-380, 4C +55.17, Ton 116, PG 1246+586 and RBS 1432) which were found to exhibit very high energy emission ($E_γ>100$ GeV). Through Monte Carlo simulations it is shown that the observation of VHE photons, despite the large distances of these objects, is consistent with current EBL models. Many of these sources would be observable with the upcoming ground based observatory the Cherenkov Telescope Array (CTA), leading to a better understanding of the EBL.
description: 11 pages, 7 figures
X-ray In-Depth Decomposition: Revealing The Latent Structures
Creators: name: Albarqouni, Shadi
name: Fotouhi, Javad
name: Navab, Nassir
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: X-ray radiography is the most readily available imaging modality and has a broad range of applications that spans from diagnosis to intra-operative guidance in cardiac, orthopedics, and trauma procedures. Proper interpretation of the hidden and obscured anatomy in X-ray images remains a challenge and often requires high radiation dose and imaging from several perspectives. In this work, we aim at decomposing the conventional X-ray image into d X-ray components of independent, non-overlapped, clipped sub-volumes using deep learning approach. Despite the challenging aspects of modeling such a highly ill-posed problem, exciting and encouraging results are obtained paving the path for further contributions in this direction.
description: Under review at MICCAI 2017
Thermoelectric properties of an interacting quantum dot-based heat engine
Creators: name: Erdman, Paolo Andrea
name: Mazza, Francesco
name: Bosisio, Riccardo
name: Benenti, Giuliano
name: Fazio, Rosario
name: Taddei, Fabio
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the thermoelectric properties and heat-to-work conversion performance of an interacting, multi-level quantum dot (QD) weakly coupled to electronic reservoirs. We focus on the sequential tunneling regime. The dynamics of the charge in the QD is studied by means of master equations for the probabilities of occupation. From here we compute the charge and heat currents in the linear response regime. Assuming a generic multi-terminal setup, and for low temperatures (quantum limit), we obtain analytical expressions for the transport coefficients which account for the interplay between interactions (charging energy) and level quantization. In the case of systems with two and three terminals we derive formulas for the power factor Q and the figure of merit ZT for a QD-based heat engine, identifying optimal working conditions which maximize output power and efficiency of heat-to-work conversion. Beyond the linear response we concentrate on the two-terminal setup. We first study the thermoelectric non-linear coefficients assessing the consequences of large temperature and voltage biases, focusing on the breakdown of the Onsager reciprocal relation between thermopower and Peltier coefficient. We then investigate the conditions which optimize the performance of a heat engine, finding that in the quantum limit output power and efficiency at maximum power can almost be simultaneously maximized by choosing appropriate values of electrochemical potential and bias voltage. At last we study how energy level degeneracy can increase the output power.
description: 30 pages, 15 figures. Published version
OncoScore: a novel, Internet-based tool to assess the oncogenic potential of genes
Creators: name: Piazza, Rocco
name: Ramazzotti, Daniele
name: Spinelli, Roberta
name: Pirola, Alessandra
name: De Sano, Luca
name: Ferrari, Pierangelo
name: Magistroni, Vera
name: Cordani, Nicoletta
name: Sharma, Nitesh
name: Gambacorti-Passerini, Carlo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Genomics (q-bio.GN)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: The complicated, evolving landscape of cancer mutations poses a formidable challenge to identify cancer genes among the large lists of mutations typically generated in NGS experiments. The ability to prioritize these variants is therefore of paramount importance. To address this issue we developed OncoScore, a text-mining tool that ranks genes according to their association with cancer, based on available biomedical literature. Receiver operating characteristic curve and the area under the curve (AUC) metrics on manually curated datasets confirmed the excellent discriminating capability of OncoScore (OncoScore cut-off threshold = 21.09; AUC = 90.3%, 95% CI: 88.1-92.5%), indicating that OncoScore provides useful results in cases where an efficient prioritization of cancer-associated genes is needed.
Kita Tschenkeli †
Creators: name: Risch, Ernst
name: Flury, Lea
Publisher: name: Zentralbibliothek Zürich
Year: 1964
Subjects: subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Tschenkéli, Kita
subject: Kutaissi
subject: Zürich

description: Sonderdruck aus Neue Zürcher Zeitung, 29. Oktober 1963
Influence of the Microstructure on Flow Stress and Deformability of Iron-Aluminium Alloys
Creators: name: Peddinghaus, Julius
name: Brunotte, Kai
name: Wester, Hendrik
name: Till, Michael
name: Kock, Christoph
name: Behrens, Bernd-Arno
Publisher: name: Ostrava : TANGER Ltd.
Year: 2022
Subjects: subject: Equal Channel Angular Pressing (ECAP)
subject: Flow stress
subject: Hot forming
subject: Iron-aluminium alloys
subject: Microstructure
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: Due to their higher weight-specific and high-temperature strength, iron-aluminium alloys have a high potential to replace steel in various applications. The good availability of the two materials, the excellent recyclability, lower density with increasing aluminium content and the high corrosion resistance in sulphide- and sulphur-rich environments are further advantages. However, with increasing aluminium content, ductility of FeAl alloys decreases due to hydrogen embrittlement at room temperature. As a result, iron-aluminium alloys have been excluded from potential applications, particularly structural ones. Investigations on powder metallurgical produced iron-aluminium alloys show that fine-grained microstructures can lead to significant improvement in ductility. Assuming equal grain diameters, higher toughness is expected in case of metallurgical ingot production followed by hot forming. The present work deals with the mechanical properties of fine-grained microstructure in iron-rich iron-aluminium alloys, pre-processed through Equal Channel Angular Pressing. In order to characterize the mechanical properties, compression tests with the alloys Fe9AI, Fe28AI and Fe38AI are carried out at different temperatures. The flow curves determined are then compared with those from as-cast state. In addition, deformation capacity is examined optically on slopes of external cracks. In conclusion, the results are discussed based on the microstructure.
Information Theoretic Limits for Linear Prediction with Graph-Structured Sparsity
Creators: name: Barik, Adarsh
name: Honorio, Jean
name: Tawarmalani, Mohit
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (cs.LG)
subject: Information Theory (cs.IT)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We analyze the necessary number of samples for sparse vector recovery in a noisy linear prediction setup. This model includes problems such as linear regression and classification. We focus on structured graph models. In particular, we prove that sufficient number of samples for the weighted graph model proposed by Hegde and others is also necessary. We use the Fano's inequality on well constructed ensembles as our main tool in establishing information theoretic lower bounds.
Forecasting in the light of Big Data
Creators: name: Hosni, Hykel
name: Vulpiani, Angelo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Physics and Society (physics.soc-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: Predicting the future state of a system has always been a natural motivation for science and practical applications. Such a topic, beyond its obvious technical and societal relevance, is also interesting from a conceptual point of view. This owes to the fact that forecasting lends itself to two equally radical, yet opposite methodologies. A reductionist one, based on the first principles, and the naive inductivist one, based only on data. This latter view has recently gained some attention in response to the availability of unprecedented amounts of data and increasingly sophisticated algorithmic analytic techniques. The purpose of this note is to assess critically the role of big data in reshaping the key aspects of forecasting and in particular the claim that bigger data leads to better predictions. Drawing on the representative example of weather forecasts we argue that this is not generally the case. We conclude by suggesting that a clever and context-dependent compromise between modelling and quantitative analysis stands out as the best forecasting strategy, as anticipated nearly a century ago by Richardson and von Neumann.
Predicting Process Behaviour using Deep Learning
Creators: name: Evermann, Joerg
name: Rehse, Jana-Rebecca
name: Fettke, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Predicting business process behaviour is an important aspect of business process management. Motivated by research in natural language processing, this paper describes an application of deep learning with recurrent neural networks to the problem of predicting the next event in a business process. This is both a novel method in process prediction, which has largely relied on explicit process models, and also a novel application of deep learning methods. The approach is evaluated on two real datasets and our results surpass the state-of-the-art in prediction precision.
description: 34 pages, 10 figures
title: The Effect of Derivatives Usage on Value and Risk: Evidence from European Non-Financial Firms
titleType: Other
Creators: name: Alghizzawi, Wafa'A
Publisher: name: University of Dundee
Year: 2023

description: In light of the recent efforts to regulate derivatives markets in response to the 2008/09 Global Financial Crisis, this thesis aims to provide comprehensive new evidence on the spread and effect of derivatives usage on firm value and risk by utilising data from non-financial firms listed in 16 European countries. Although there exists a sizeable body of evidence on the determinants of hedging decisions and how they relate to firm value, the literature has not provided clarity on either matter. In addition, the extant literature that has examined the effect of derivatives usage on firm risk has also provided contradictory evidence. Data from a comprehensive sample of non-financial European firms were manually collected from the firms’ annual reports for the period 2005–2017. This data set is distinctive and discriminated between users of foreign exchange and interest rate derivatives. An analysis of the data revealed that derivatives usage was concentrated in larger-sized firms, providing support for the economies of scale theory. In line with the exposure rationale of using derivatives, movements in derivatives usage positions were related to changes in financial exposure levels. In addition, derivatives usage by European non-financial firms was an effective risk management practice that provided risk reduction. Thus, the results obtained from the current analysis do not support the irrelevance theorem of Modigliani and Miller (1958) but supported corporate risk management theories by verifying risk reduction for derivatives users. However, the results revealed that foreign exchange derivatives users enjoyed a hedging premium, while interest rate derivatives users suffered a hedging discount. Additionally, the findings revealed that the efficiency of derivatives usage was related to country-level differences. Specifically, countries with stronger legal rights, higher development and/or higher international trade were more efficient in their use of derivatives as it led to enhanced value and/or risk reduction. Understanding the impact of derivatives usage on firm value and risk, as well as the country-specific factors relating to their efficiency can improve the ability of corporate managers in employing the most effective risk management strategy, guide risk-averse shareholders to invest in firms holding foreign exchange derivatives and located in larger economies and restrain employees, suppliers and creditors from contracting with firms holding interest rate derivatives with weaker legal rights. Regulatory agencies should formulate rules that distinguish between foreign exchange and interest rate derivatives trades, may ruling restrictions for trading interest rate derivative instruments. Furthermore, policymakers may impose tougher restrictions on, or higher transaction costs for, the use of derivatives in larger economies and set stronger legal rights to limit speculative practices and the severity of economic downturns.
Webinar: Governance and Business Models for setting up a Living Lab
Creators: name: Couture, Isabelle
name: Cavallo, Dolinda
name: Grbović, Vladislava
name: Stojačić, Isidora
Publisher: name: Zenodo
Year: 2023
Subjects: Soil health
Mission Soil
Living Labs
Business Model

description: The webinar Governance and Business Models for setting up a Living Lab took place on 29 June 2023 10:00 – 11:30 CEST. This second webinar focused on two main topics: Governance and Business Models. The presenters helped participants better understand what governance and business models are and why such models are important for the success of a Living Lab. In this webinar, participants learned about the different types of governance models and how to build a governance model that incorporates a variety of actors. Finally, the speakers presented some of the most effective strategies to build a self-sustained LL, providing examples of best practices. Watch the recording
Single-laser-pulse implementation of arbitrary ZYZ rotations of an atomic qubit
Creators: name: Lee, Han-gyeol
name: Song, Yunheung
name: Ahn, Jaewook
Publisher: name: arXiv
Year: 2017
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Arbitrary rotation of a qubit can be performed with a three-pulse sequence; for example, ZYZ rotations. However, this requires precise control of the relative phase and timing between the pulses, making it technically challenging in optical implementation in a short time scale. Here we show any ZYZ rotations can be implemented with a single laser-pulse, that is {\it a chirped pulse with a temporal hole}. The hole of this shaped pulse induces a non-adiabatic interaction in the middle of the adiabatic evolution of the chirped pulse, converting the central part of an otherwise simple Z-rotation to a Y rotation, constructing ZYZ rotations. The result of our experiment performed with shaped femtosecond laser pulses and cold rubidium atoms shows strong agreement with the theory.
description: 5 pages 4 figures
MontoloStats - Ontology Modeling Statistics
Creators: name: Lieber, Sven
name: De Meester, Ben
name: Dimou, Anastasia
name: Verborgh, Ruben
Publisher: name: Zenodo
Year: 2019
Subjects: RDF
axioms
restrictions
Ontology Engineering
statistics

description: The presentation of our paper presented at K-Cap 2019 in Marina Del Rey, California ,USA.
The MUSE view of the host galaxy of GRB 100316D
Creators: name: Izzo, L.
name: Thöne, C. C.
name: Schulze, S.
name: Mehner, A.
name: Flores, H.
name: Cano, Z.
name: Postigo, A. de Ugarte
name: Kann, D. A.
name: Amorìn, R.
name: Anderson, J. P.
name: Bauer, F. E.
name: Bensch, K.
name: Christensen, L.
name: Covino, S.
name: Della Valle, M.
name: Fynbo, J. P. U.
name: Jakobsson, P.
name: Klose, S.
name: Kuncarayakti, H.
name: Leloudas, G.
name: Milvang-Jensen, B.
name: Möller, P.
name: Puech, M.
name: Rossi, A.
name: Sànchez-Ramìrez, R.
name: Vergani, S. D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The low distance, $z=0.0591$, of GRB 100316D and its association with SN 2010bh represent two important motivations for studying this host galaxy and the GRB's immediate environment with the Integral-Field Spectrographs like VLT/MUSE. Its large field-of-view allows us to create 2D maps of gas metallicity, ionization level, and the star-formation rate distribution maps, as well as to investigate the presence of possible host companions. The host is a late-type dwarf irregular galaxy with multiple star-forming regions and an extended central region with signatures of on-going shock interactions. The GRB site is characterized by the lowest metallicity, the highest star-formation rate and the youngest ($\sim$ 20-30 Myr) stellar population in the galaxy, which suggest a GRB progenitor stellar population with masses up to 20 -- 40 $M_{\odot}$. We note that the GRB site has an offset of $\sim$660pc from the most luminous SF region in the host. The observed SF activity in this galaxy may have been triggered by a relatively recent gravitational encounter between the host and a small undetected ($L_{Hα} \leq 10^{36}$ erg/s) companion.
description: 19 pages, 17 figures, 6 tables. Updated version after referee comments. Accepted for publication in MNRAS
Blood Vessel Tortuosity Selects against Evolution of Agressive Tumor Cells in Confined Tissue Environments: a Modeling Approach
Creators: name: Szabó, András
name: Merks, Roeland M. H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: Cancer is a disease of cellular regulation, often initiated by genetic mutation within cells, and leading to a heterogeneous cell population within tissues. In the competition for nutrients and growth space within the tumors the phenotype of each cell determines its success. Selection in this process is imposed by both the microenvironment (neighboring cells, extracellular matrix, and diffusing substances), and the whole of the organism through for example the blood supply. In this view, the development of tumor cells is in close interaction with their increasingly changing environment: the more cells can change, the more their environment will change. Furthermore, instabilities are also introduced on the organism level: blood supply can be blocked by increased tissue pressure or the tortuosity of the tumor-neovascular vessels. This coupling between cell, microenvironment, and organism results in behavior that is hard to predict. Here we introduce a cell-based computational model to study the effect of blood flow obstruction on the micro-evolution of cells within a cancerous tissue. We demonstrate that stages of tumor development emerge naturally, without the need for sequential mutation of specific genes. Secondly, we show that instabilities in blood supply can impact the overall development of tumors and lead to the extinction of the dominant aggressive phenotype, showing a clear distinction between the fitness at the cell level and survival of the population. This provides new insights into potential side effects of recent tumor vasculature renormalization approaches.
Tensor-optimized antisymmetrized molecular dynamics as a successive variational method in nuclear many-body system
Creators: name: Myo, Takayuki
name: Toki, Hiroshi
name: Ikeda, Kiyomi
name: Horiuchi, Hisashi
name: Suhara, Tadahiro
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the tensor-optimized antisymmetrized molecular dynamics (TOAMD) as a successive variational method in many-body systems with strong interaction for nuclei. In TOAMD, the correlation functions for the tensor force and the short-range repulsion and their multiples are operated to the AMD state as the variational wave function. The total wave function is expressed as the sum of all the components and the variational space can be increased successively with the multiple correlation functions to achieve convergence. All the necessary matrix elements of many-body operators, consisting of the multiple correlation functions and the Hamiltonian, are expressed analytically using the Gaussian integral formula. In this paper we show the results of TOAMD with up to the double products of the correlation functions for the s-shell nuclei, 3H and 4He, using the nucleon-nucleon interaction AV8'. It is found that the energies and Hamiltonian components of two nuclei converge rapidly with respect to the multiple of correlation functions. This result indicates the efficiency of TOAMD for the power series expansion in terms of the tensor and short-range correlation functions.
description: 7 pages, 5 figures, added references, corrected typos
Resolution-enhanced entanglement detection
Creators: name: Gessner, Manuel
name: Pezzè, Luca
name: Smerzi, Augusto
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We formulate a general family of entanglement criteria for multipartite systems. Fisher information criteria compare the sensitivity to unitary rotations with the variances of suitable local observables. Generalized squeezing-type criteria provide lower bounds that are less stringent but only require measurements of second moments. The enhancement due to local access to the individual subsystems is studied in detail for the case of $N$ spin-$1/2$ particles. The discussed techniques can be readily implemented in current experiments with trapped ions in Paul traps and neutral atoms in optical lattices.
description: 13 pages, 5 figures, 1 table
Presentation: Growth Responses of Ten Soybean (Glycine Max L.Merril) Genotypes on Trichoderma sp Application in Suboptimal Land
Creators: name: Lagiman
name: Budi Widayanto
name: Suryawati, Ami
Publisher: name: Zenodo
Year: 2022

description: This material has presented on 1st International Conference on Advance Research in Agriculture and Food. October 25, 2022
Universal extensions of restricted classes of quantum operations
Creators: name: Oszmaniec, Michał
name: Zimborás, Zoltán
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: For numerous applications of quantum theory it is desirable to be able to apply arbitrary unitary operations on a given quantum system. However, in particular situations only a subset of unitary operations is easily accessible. This raises the question of what additional unitary gates should be added to a given gate-set in order to attain physical universality, i.e., to be able to perform arbitrary unitary transformation on the relevant Hilbert space. In this work, we study this problem for three paradigmatic cases of naturally occurring restricted gate-sets: (A) particle-number preserving bosonic linear optics, (B) particle-number preserving fermionic linear optics, and (C) general (not necessarily particle-number preserving) fermionic linear optics. Using tools from group theory and control theory, we classify, in each of these scenarios, what sets of gates are generated, if an additional gate is added to the set of allowed transformations. This allows us to solve the universality problem completely for arbitrary number of particles and for arbitrary dimensions of the single-particle Hilbert space.
description: 4 pages, 2 figures, 16 pages of appendix, comments and suggestions are welcome
Quasi-two-body decays $B_{(s)}\to Pρ^\prime(1450), Pρ^{\prime\prime}(1700)\to Pππ$ in the perturbative QCD approach
Creators: name: Li, Ya
name: Ma, Ai-Jun
name: Wang, Wen-Fei
name: Xiao, Zhen-Jun
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this work, we calculate the $CP$-averaged branching ratios and direct $CP$-violating asymmetries of the quasi-two-body decays $B_{(s)}\to P ρ^\prime(1450), Pρ^{\prime\prime}(1700)\to P ππ$ by employing the perturbative QCD (PQCD) factorization approach, where $P$ is a light pseudoscalar meson $K, π, η$ and $η^{\prime}$. The considered decay modes are studied in the quasi-two-body framework by parameterizing the two-pion distribution amplitude $Φ_{ππ}^{\rm P}$. The $P$-wave time-like form factor $F_π$ in the resonant regions associated with the $ρ^\prime(1450)$ and $ρ^{\prime\prime}(1700)$ is estimated based on available experimental data. The PQCD predictions for the $CP$-averaged branching ratios of the decays $B_{(s)}\to Pρ^\prime(1450), Pρ^{\prime\prime}(1700)\to Pππ$ are in the order of $10^{-7} \sim 10^{-9}$. The branching ratios of the two-body decays $B_{(s)}\to Pρ^\prime(1450), Pρ^{\prime\prime}(1700)$ are extracted from the corresponding quasi-two-body decay modes. The whole pattern of the pion form factor-squared $|F_π|^2$ measured by {\it BABAR} Collaboration could also be understood based on our studies. Our PQCD predictions will be tested by the precise data from the LHCb and the future Belle II experiments.
description: 8 pages, 1 figure
Relativistic Dynamics and Mass Exchange in Binary Black Hole Mini-Disks
Creators: name: Bowen, Dennis B.
name: Campanelli, Manuela
name: Krolik, Julian H.
name: Mewes, Vassilios
name: Noble, Scott C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the first exploration of relativistic gas dynamics in the immediate vicinity of binary black holes as the system inspirals close to merger in the gravitational radiation-driven regime. We focus on 2D hydrodynamical studies of comparable-mass, non-spinning systems. Relativistic effects alter the dynamics of gas in this environment in several ways. Because the gravitational potential between the two black holes becomes shallower than in the Newtonian regime, the mini-disks stretch toward the L1 point and the amount of gas passing back and forth between the mini-disks increases sharply with decreasing binary separation. This "sloshing" is quasi-periodically modulated at $2$ and $2.75$ times the binary orbital frequency, corresponding to timescales of hours to days for supermassive binary black holes. In addition, relativistic effects add an $m=1$ component to the tidally-driven spiral waves in the disks that are purely $m=2$ in Newtonian gravity; this component becomes dominant when the separation is $\lesssim 100$ gravitational radii. Both the sloshing and the spiral waves have the potential to create distinctive radiation features that may uniquely mark supermassive binary black holes in the relativistic regime.
description: 21 pages, 19 figures