cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Unitary transformations, empirical processes and distribution free testing
Creators: name: Khmaladze, Estate
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: The main message in this paper is that there are surprisingly many different Brownian bridges, some of them - familiar, some of them - less familiar. Many of these Brownian bridges are very close to Brownian motions. Somewhat loosely speaking, we show that all the bridges can be conveniently mapped onto each other, and hence, to one "standard" bridge. The paper shows that, a consequence of this, we obtain a unified theory of distribution free testing in $\mathbb {R}^d$, both for discrete and continuous cases, and for simple and parametric hypothesis.
description: Published at http://dx.doi.org/10.3150/14-BEJ668 in the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Exploring Internal Communication Satisfaction: The case study of a rural K-12 school division
Creators: Angela Baron
Publisher: name: University of Alberta Library
Year: 2022

In the fast-changing world of communication technologies, it is more important than ever for organizations to understand employee preferences for accessing and receiving information related to company goals, changes and operations. This is especially true in organizations operating in high spatial decentralized environments, such as rural K-12 school divisions, as a lack of information can lead to uncertainty and bypass formal communication channels. While several studies have explored internal communication satisfaction (ICS) in the work environment, minimal research has focused on the preferences and needs of K-12 rural school division employees.

This study seeks to understand school division employees' ICS by exploring a case study of a rural K-12 jurisdiction in southeastern Alberta. Specifically, the research aims to find out the extent employees are satisfied with the communication they receive while working for the school division. To explore this relationship, a mixed-methods research approach was used. This included collecting survey data from all school division staff using an online survey supplemented by one-on-one interviews with a small number of employees. The lenses of media richness theory (MRT), channel expansion theory (CET), and reception theory (RT), along with five of the eight dimensions that make up the ICS multidimensional construct, were used to evaluate the data. The dimensions chosen for this study included organizational integration, communication climate, communication with supervisors, horizontal information communication, and media quality.

The findings suggest that K-12 rural school division employees are overall satisfied with internal communication processes; however, much like other organizations, they continue to be drawn to more traditional communication methods. As a result, future ICS growth in the rural K-12 internal communications environment may be limited without changes to support consistency and the education of newer communication technologies to meet employee communication satisfaction needs.
title: Greenhouse Gases Emission Reduction Trough Topology Optimization and 3D Printing
Creators: name: Alencar Oliveira, Francisco
name: Picelli Sanches, Renato
name: Barari, Ahmad
name: Oliveira Romano, Roberto
name: Pileggi, Rafael
name: Nelli Silva, Emílio
name: Sales Guerra Tsuzuki, Marcos
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: topology optimization
subject: 3D concrete printing
subject: sustainability
subject: 62

description: The construction sector, accounting for 8% of global CO2 emissions and utilizing 40% of extracted natural resources, faces a crucial challenge in reducing greenhouse gas emissions (GHG) and adopting sustainable waste management practices [1]. Alarmingly, the sector ranks near the bottom in terms of digitization, according to the MGI Industry Index. To enhance competitiveness and efficiency in resource management, automation is needed in the construction sector. To address these challenges, we propose a digital design methodology that integrates topology optimization (TO) gradient-based approaches with additive manufacturing (AM) for cementitious structure design. This approach leverages the advantages of complex and non-intuitive optimized forms. It involves creating a three-dimensional mathematical model, discretizing it using finite element methods (FEM), and applying TO to achieve minimum compliance design within volume and manufacturing constraints. The finalized design is then constructed using 3D Concrete Printing (3DCP) within an integrated CAE-CAD-CAM system. By integrating these digitally optimized TO design methods with AM and low-carbon footprint cementitious materials, significant reductions in GHG emissions can be achieved, enhancing productivity in the civil construction industry.
description: Digital Concrete 2024 - Supplementary Proceedings
Universality for polynomial invariants on ribbon graphs with half-ribbons
Creators: name: Avohou, Remi C.
name: Geloun, Joseph Ben
name: Hounkonnou, Mahouton N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geometric Topology (math.GT)
subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: (2010): 05C10, 57M15

description: In this paper, we analyze the Bollobás and Riordan polynomial $\mathcal{R}$ for ribbon graphs with half-ribbons introduced in [Combinatorics, Probability and Computing 31, 507-549, 2022]. We prove the universality property of a multivariate version of $\mathcal{R}$ whereas $\mathcal{R}$ itself turns out to be universal for a subclass of ribbon graphs with half-ribbons. We also show that $\mathcal{R}$ can be defined on some equivalence classes of ribbon graphs involving half-ribbons moves and that the new polynomial is universal on these classes.
description: 21 pages, 15 figures
Two ambuic acid dimers derived from homo-endo Diels-Alder reaction from Pestalotiopsis versicolor
Creators: name: Li, Dan-Yi
name: Zhang, Xiao-Ling
name: Li, Zhan-Lin
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
subject: Science Policy
classificationCode: 110309
subject: Infectious Diseases
subject: FOS: Health sciences
classificationCode: 60506
subject: Virology

description: Two new dimers of ambuic acid, pestaloversicoloric acids A (1) and B (2), and a known derivative, 13(S)-hydroxyambuic acid (3), were isolated from the static fermentation product of Pestalotiopsis versicolor. The structural identification was accomplished via analyses on the data of HR-MS, 1 D and 2 D NMR, and ECD. Different from the well-known exo-type dimer, torreyanic acid, compounds 1 and 2 represent the first example of endo-type product derived from the intermolecular Diels-Alder reaction of two molecules of ambuic acid derivative with the identical absolute stereochemistry.
Two new compounds from Pergularia tomentosa growing wildly in Jordan
Creators: name: Shatat, Alaa’
name: Sweidan, Nuha
name: Abu Zarga, Musa
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Ecology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified

description: Phytochemical investigation of the aerial parts and latex of Pergularia tomentosa from Jordan, utilizing column chromatography accompanied with NMR (1 & 2D), IR, UV, and HR-ESI-Mass spectroscopy have led to the isolation and characterization of two new compounds, pergularol (1) and 3-O-acetyl-28-hydroxytaraxasterol (2) for the first time along with other ten known compounds including linoleic acid (3), 3'-didehydroafroside (4), apigenin (5), β-sitosteryl glucoside (6), luteolin (7), apigenin 7-(6''-crotonoyl)glucoside (8), 3'-O-β-glucopyranosylcalotropin (9), apigenin-7-O-β-D-glycoside (10), pergularine A (11), taraxasterol (12). Compound (8) is isolated for the first time from Pergularia genus.
A Central Limit Theorem for the Length of the Longest Common Subsequences in Random Words
Creators: name: Houdré, Christian
name: Işlak, Ümit
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A05, 60C05, 60F05

description: Let $(X_i)_{i \geq 1}$ and $(Y_i)_{i\geq1}$ be two independent sequences of independent identically distributed random variables taking their values in a common finite alphabet and having the same law. Let $LC_n$ be the length of the longest common subsequences of the two random words $X_1\cdots X_n$ and $Y_1\cdots Y_n$. Under a lower bound assumption on the order of its variance, $LC_n$ is shown to satisfy a central limit theorem. This is in contrast to the limiting distribution of the length of the longest common subsequences in two independent uniform random permutations of $\{1, \dots, n\}$, which is shown to be the Tracy-Widom distribution.
description: Revised arguments, main result unchanged; Corrected typos; Added references
title: Cross-Layer Reinforcement Robot for 3D Printing Concrete: Hardware, Software, and Validation
Creators: name: Zhao, Cong
name: Wang, Hailong
name: Sun, Xiaoyan
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: 3D printing concrete
subject: Robot
subject: Cross-layer reinforcement
subject: Steel fibre
subject: Inserted steel rebar
subject: 62

description: A significant technical challenge faced by 3D printing concrete (3DPC) is integrating reinforcing materials, such as steel fibre and rebar, across multiple layers. Additionally, an automated reinforcement process is essential to ensure the installation precision of the reinforcement and maintain the construc-tion efficiency of 3DPC. This study proposes a robotic system to achieve collab-orative work between cross-layer reinforcement installation and concrete print-ing. The proposed system consists of two main modules: a concrete printing module and a cross-layer reinforcement installation module. This study devel-oped a simple Cartesian robot as a preliminary cross-layer reinforcement instal-lation module, which can work with a gantry-style 3D printer. A set of software based on Robot Operating System 2 was used to control the robot’s actions. The robot has three linear joints and one revolute joint, the revolute joint enables the insertion of cross-layer reinforcement at different angles. With specially de-signed end-effectors, this robot can handle different reinforcing materials. Steel fibre and U-shaped steel rebar were adopted to rein-force the printed concrete, and then X-Ray Computed Tomography (XCT) scanning analysis was used to verify the reliability of this system.
description: Digital Concrete 2024 - Supplementary Proceedings
Total synthesis of chondroitin sulfate E oligosaccharides and biological study
Creators: name: Yang, Shuang
name: Zhang, Guang-Yan
name: Zhang, Jin-Yue
name: Li, Tian-Qi
name: Zhao, Zhe-Hui
name: Wang, Ying-Hong
name: Lei, Ping-Sheng
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
classificationCode: 29999
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Cell Biology
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Cancer

description: A total synthesis approach of CS-E oligosaccharides was established and a series of derivatives were synthesized. These oligosaccharides were evaluated for a glycosaminoglycan (GAG)-binding protein interaction against cytokines, midkine, and pleiotrophin, by surface-plasmon resonance (SPR) assay. The binding epitopes of oligosaccharides to midkine were mapped using a saturation transfer difference (STD) NMR technique. The groups on the reducing end contributed to binding affinity, and should not be ignored in biological assays. These findings contribute to the structure and activity relationship research and a foundation of understanding that will underpin potential future optimization of this class of oligosaccharides as pharmaceutical agents.
title: A Digital Design Process for Bundling of Void Formers for Application in Functionally Graded Concrete
Creators: name: Haufe, Carl
name: Castel, Paula
name: Strahm, Benedikt
name: Nigl, David
name: Clémenté, Jérôme
name: Roos, Florian
name: Blandini, Lucio
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: funcionally graded concrete
subject: mineral void formers
subject: mineral hollow bodies
subject: design to fabrication
subject: digital design
subject: 62

description: Minimizing resource consumption, greenhouse gas emissions and construction waste is essential to the construction industry. One comprehensive approach to addressing this in concrete construction is the technology of Functionally Graded Concrete (FGC) developed at the Institute for Lightweight Structures and Conceptual Design (ILEK). It is based on the purposeful placement of mineral void formers in the interior of concrete building elements in areas of low stress. This allows for significant mass reduction in FGC elements and enables mono-material recycling. Previous investigations dealt with the structural design and assessment of FGC building components. This contribution presents an interface prepared to link the developed design methods with the fabrication of FGC components. It focuses on the positioning of bundles of mineral void formers inside the given statical boundary conditions of the structure. This could reduce the effort in an industrialized process for human-assisted installation or a fully robotic pick-and-place process. The top-down design algorithm is implemented in a Rhino/Grasshopper 3D environment. Numerical optimization is used to generate a grid across all constrained areas in the floor plan. This grid enables the greatest number of void formers to increase the mass-saving performance and assures the continuity of the longitudinal reinforcement across areas. The designer can define hierarchical bundles in the input interface to account for fabrication restrictions from transportation, physical human limitations, or robotic gripping. The bundle placement can be optimized accordingly. The results of this process will be used in a real-scale case study, the Large-Scale Construction Robotics Laboratory (LCRL) of the Cluster of Excellence IntCDC at the University of Stuttgart.
description: Digital Concrete 2024 - Supplementary Proceedings
Griffiths Residence [Project: 128-12-70]
Creators: name: Hodgson, Alan J. (Alan James)
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Modern movement (Architecture)
valueUri: http://id.worldcat.org/fast/1024437
subject: Architecture, Modern
valueUri: http://id.worldcat.org/fast/813842
subject: Architects
valueUri: http://id.worldcat.org/fast/813114
subject: Architecture
valueUri: http://id.worldcat.org/fast/813346
subject: FOS: Civil engineering
subject: Architecture, Domestic
valueUri: http://id.worldcat.org/fast/813666

description: Project material consists of one large folder of architectural drawings pertaining to the design of the Griffiths Residence and a later design for a boathouse on the property. The property is located at 8129 Lochside Drive in Central Sannich, B.C. The Griffiths are variously identified as “Dr. Marion E.M. Griffiths” and “Mr. and Dr. J.R. Griffiths”. Included are floor plans; site plans; plumbing plans; schedules; elevations; sections drawings; detail drawings; electrical plans; specifications; perspective drawings; sketches; and other material produced at various stages of the design process.
A new isomaneonene derivative from the red alga Laurencia cf. mariannensis
Creators: name: Ishii, Takahiro
name: Tahara, Arisu
name: Taba, Kanako
name: Iwatsuki, Masato
name: Honsho, Masako
name: Asami, Yukihiro
name: Nonaka, Kenichi
name: Hanaki, Hideaki
name: Teruya, Toshiaki
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Evolutionary Biology
subject: FOS: Biological sciences
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Ecology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
classificationCode: 110309
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
classificationCode: 60506
subject: Virology

description: Determining the structures of new natural products from marine species not only enriches our understanding of the diverse chemistry of these species, but can also lead to the discovery of compounds with novel and/or important biological activities. Herein, we describe the isolation of isomaneonene C (1), a new halogenated C15 acetogenin, and three known compounds, α-snyderol (2), cis-maneonene D (3), and isomaneonene B (4), from the organic extract obtained from the red alga Laurencia cf. mariannensis collected from Iheya Island, Okinawa, Japan. The structures of these secondary metabolites were elucidated spectroscopically. All compounds were inactive at 30 μg/disc against methicillin-resistant Staphylococcus aureus (MRSA) in combination treatment with a β-lactam drug, meropenem.
Automatic Recognition of Sunspots in HSOS Full-Disk Solar Images
Creators: name: Zhao, Cui
name: Lin, GangHua
name: Deng, YuanYong
name: Yang, Xiao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A procedure is introduced to recognise sunspots automatically in solar full-disk photosphere images obtained from Huairou Solar Observing Station, National Astronomical Observatories of China. The images are first pre-processed through Gaussian algorithm. Sunspots are then recognised by the morphological Bot-hat operation and Otsu threshold. Wrong selection of sunspots is eliminated by a criterion of sunspot properties. Besides, in order to calculate the sunspots areas and the solar centre, the solar limb is extracted by a procedure using morphological closing and erosion operations and setting an adaptive threshold. Results of sunspot recognition reveal that the number of the sunspots detected by our procedure has a quite good agreement with the manual method. The sunspot recognition rate is 95% and error rate is 1.2%. The sunspot areas calculated by our method have high correlation (95%) with the area data from USAF/NOAA.
description: 9 pages, 6 figures, 2 tables, accepted for publication in PASA
title: Large scale 3D printing of a shell structure reinforced by the flow based pultrusion process
Creators: name: De Bono, Victor
name: Demont, Léo
name: Ducoulombier, Nicolas
name: Mesnil, Romain
name: Caron, François
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: 62

description: Digital Concrete 2024 - Supplementary Proceedings
Three-term polynomial progressions in subsets of finite fields
Creators: name: Peluse, Sarah
Publisher: name: arXiv
Year: 2017
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Bourgain and Chang recently showed that any subset of $\mathbb{F}_p$ of density $\gg p^{-1/15}$ contains a nontrivial progression $x,x+y,x+y^2$. We answer a question of theirs by proving that if $P_1,P_2\in\mathbb{Z}[y]$ are linearly independent and satisfy $P_1(0)=P_2(0)=0$, then any subset of $\mathbb{F}_p$ of density $\gg_{P_1,P_2}p^{-1/24}$ contains a nontrivial polynomial progression $x,x+P_1(y),x+P_2(y)$.
description: 21 pages; v2: minor exposition changes based on referee comments
Magnetic field dependence of the magnon spin diffusion length in the magnetic insulator yttrium iron garnet
Creators: name: Cornelissen, L. J.
name: van Wees, B. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigated the effect of an external magnetic field on the diffusive spin transport by magnons in the magnetic insulator yttrium iron garnet (YIG), using a non-local magnon transport measurement geometry. We observed a decrease in magnon spin diffusion length $λ_m$ for increasing field strengths, where $λ_m$ is reduced from 9.6$\pm1.2$ $μ$m at 10 mT to 4.2$\pm0.6$ $μ$m at 3.5 T at room temperature. In addition, we find that there must be at least one additional transport parameter that depends on the external magnetic field. Our results do not allow us to unambiguously determine whether this is the magnon equilibrium density or the magnon diffusion constant. These results are significant for experiments in the more conventional longitudinal spin Seebeck geometry, since the magnon spin diffusion length sets the length scale for the spin Seebeck effect as well and is relevant for its understanding.
description: 6 pages, 5 figures
title: Free-form Structural Optimization for Additive Manufacturing in Construction
Creators: name: Wüchner, Roland
name: Warnakulasuriya, Suneth
name: Asl, Reza
name: Bletzinger, Kai-Uwe
name: D'Acunto, Pierluigi
name: Herding, Friedrich
name: Lowke, Dirk
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: structural optimization
subject: free-form design
subject: shape optimization
subject: lightweight structures
subject: grading
subject: selective cement activation
subject: 62

description: Additive manufacturing (AM) enables the realization of structures with almost unlimited geometrical freedom. In order to fully utilize these capabilities, an optimization methodology that offers the largest possible design space is essential. The so-called vertex morphing approach enables the largest possible design space by allowing each nodal coordinate of the FEM mesh as a design variable. Current extensions of this method aim at the generalization of this extremely rich shape parameterization. For example, material densities are also included in the optimization, which enables the optimization of structural topologies on the one hand and even the determination of an optimal grading of the material on the other hand. In particular, the latter is very promising for AM methods with concrete, as this allows for a further design parameter in structural planning. A spatial distribution and grading of material properties within the structure, which can save on cement, is vital in ecological layout of structures. In this article, the background and possibilities of design using the aforementioned innovative methods in numerical simulation for structural analysis and optimization will be presented, and the necessary extensions to consider the special characteristics of additively manufactured structures in the construction industry will be developed and discussed. For concrete structures, this involves designing of load-bearing structures with compression-dominated load transfer, which must be captured by new suitable optimization formulations. The potential of using a huge set of design variables to enable truly free-form optimization and the combination with digital fabrication is shown in the example of a bridge-like demonstrator structure. This resulted in an outstanding improvement in the strain energy of the structure demonstrating the applicability of the proposed methodology whilst overcoming the pitfalls of the used first order optimization methods. The proposed structure is manufactured with the high-resolution AM technique of Selective Cement Activation which provides the possibility to fully leverage the presented design optimization approach.
description: Digital Concrete 2024 - Supplementary Proceedings
title: Mechanical performance of 3D Printed fiber reinforced concrete
Creators: name: Nana, W.
name: Baz, Bilal
name: Blachier, Christian
name: Peraud, Mickaël
name: Regnault de la Mothe, Loïc
name: Zhang, Qing
name: Lombois-Burger, Hélène
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: 3D printing
subject: fiber reinforced concrete
subject: steel fibers
subject: synthetic fibers
subject: 62

description: 3D Printing has been gaining exponential growth in the construction field. Many challenges have been overcome at both material and processing levels of this technology. However, the reinforcement topic must still be resolved to meet the structural requirements of concrete elements. Otherwise, the lack of reinforcement will limit its evolution. Preliminary studies showed the feasibility of using fibers to reinforce printed elements, even though a lot of technical challenges must be carefully addressed. Therefore, this study aims to evaluate the feasibility of working with different types of synthetic and metallic fibers and to characterize the mechanical performance of the chosen ones. Consequently, very promising results were found using concrete inks, combined with different dosages and geometries of fibers. The findings evidence that 3D printed fiber reinforced concrete can reach high levels of ductility, and thus, fibers can replace rebars under certain conditions. The authors' goal at large in this study is to share learnings that will help emphasize the potential of fiber-reinforced 3D printing concrete with material properties that could open the door to more structural applications.
description: Digital Concrete 2024 - Supplementary Proceedings
Stereoscopic Observation of Slipping Reconnection in A Double Candle-Flame-Shaped Solar Flare
Creators: name: Gou, Tingyu
name: Liu, Rui
name: Wang, Yuming
name: Liu, Kai
name: Zhuang, Bin
name: Chen, Jun
name: Zhang, Quanhao
name: Liu, Jiajia
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The 2011 January 28 M1.4 flare exhibits two side-by-side candle-flame-shaped flare loop systems underneath a larger cusp-shaped structure during the decay phase, as observed at the northwestern solar limb by the Solar Dynamics Observatory (SDO). The northern loop system brightens following the initiation of the flare within the southern loop system, but all three cusp-shaped structures are characterized by ~ 10 MK temperatures, hotter than the arch-shaped loops underneath. The "Ahead" satellite of the Solar Terrestrial Relations Observatory (STEREO) provides a top view, in which the post-flare loops brighten sequentially, with one end fixed while the other apparently slipping eastward. By performing stereoscopic reconstruction of the post-flare loops in EUV and mapping out magnetic connectivities, we found that the footpoints of the post-flare loops are slipping along the footprint of a hyperbolic flux tube (HFT) separating the two loop systems, and that the reconstructed loops share similarity with the magnetic field lines that are traced starting from the same HFT footprint, where the field lines are relatively flexible. These results argue strongly in favor of slipping magnetic reconnection at the HFT. The slipping reconnection was likely triggered by the flare and manifested as propagative dimmings before the loop slippage is observed. It may contribute to the late-phase peak in Fe XVI 33.5 nm, which is even higher than its main-phase counterpart, and may also play a role in the density and temperature asymmetry observed in the northern loop system through heat conduction.
description: Accepted for publication in ApJ Letters
XDFT: an efficient first-principles method for neutral excitations in molecules
Creators: name: Roychoudhury, Subhayan
name: Sanvito, Stefano
name: O'Regan, David D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: State-of-the-art methods for calculating neutral excitation energies are typically demanding and limited to single electron-hole pairs and their composite plasmons. Here we introduce excitonic density-functional theory (XDFT) a computationally light, generally applicable, first-principles technique for calculating neutral excitations based on generalized constrained DFT. In order to simulate an M-particle excited state of an N-electron system, XDFT automatically optimizes a constraining potential to confine N-M electrons within the ground-state Kohn-Sham valence subspace. We demonstrate the efficacy of XDFT by calculating the lowest single-particle singlet and triplet excitation energies of the well-known Thiel molecular test set, with results which are in excellent agreement with time-dependent DFT. Furthermore, going beyond the capability of adiabatic time-dependent DFT, we show that XDFT can successfully capture double excitations. Overall our method makes optical gaps, excition bindings and oscillator strengths readily accessible at a computational cost comparable to that of standard DFT. As such, XDFT appears as an ideal candidate to work within high-throughput discovery frameworks and within linear-scaling methods for large systems.
description: 6 pages, 4 figures
title: An Automated Pin Insertion Method for 3DCP and Its Reinforcement Effects on Beam Specimens
Creators: name: Kobayashi, Noriyuki
name: Asakawa, Tomoya
name: Nishiwaki, Tomoya
name: Egawa, Ryo
name: Kojima, Shotaro
name: Okada, Yoshito
name: Ohno, Kazunori
name: Nishijou, Keisuke
name: Miyazawa, Yuki
name: Kajita, Hideyuki
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: Reinforcement
subject: Automated pin insertion system
subject: Interlayer
subject: four-point bending test
subject: 3D concrete printing (3DCP)
subject: 62

description: In recent years, 3D concrete printing (3DCP) for construction has been actively developing. 3DCP is expected to significantly reduce the labor intensity of conventional on-site work and possess the capability to create free-form shapes of high precision without molds. This characteristic can contribute to a reduction in environmental impact by reducing the use of molds and excess waste materials. However, the additive manufacturing method inevitably introduces interlayer de-fects, weakening the structural integrity. Reinforcement against brittle failure is crucial in countries prone to earthquakes like Japan. Unlike traditional reinforced concrete structures with steel bars, 3DCP encounters difficulties in reinforcing, and the reinforcement methods have not yet been firmly established. For exam-ple, there is a method to place the rebar in advance, build the perimeter with 3DCP, and then pour concrete inside, but it does not take advantage of the un-manned work of 3DCP. Therefore, the authors proposed an automatic system in which reinforcement pins are synchronously inserted from the printer head as a part of the printing process. This reinforcement method combines labor force saving and flexible configuration. In this study, a device was developed to auto-matically insert cylindrical steel pins perpendicularly to penetrate the mortar lam-ination surface. Using the proposed method, H-shaped beam specimens with a length of 900 mm were fabricated, and four-point bending tests were conducted to evaluate the effect of reinforcement by insertion pins. The results demonstrated the capability of producing large-sized beam specimens through the automated pin insertion method in 3DCP. Moreover, it was confirmed the reinforcement pins could significantly enhance flexural toughness, with improvements of ap-proximately 3.8 times compared to specimens without reinforcement.
description: Digital Concrete 2024 - Supplementary Proceedings
Moving Beyond Sub-Gaussianity in High-Dimensional Statistics: Applications in Covariance Estimation and Linear Regression
Creators: name: Kuchibhotla, Arun Kumar
name: Chakrabortty, Abhishek
Publisher: name: arXiv
Year: 2018
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60G50, 62J05, 60B20, 62J07, 62E17, 60F05, 60E15

description: Concentration inequalities form an essential toolkit in the study of high dimensional (HD) statistical methods. Most of the relevant statistics literature in this regard is based on sub-Gaussian or sub-exponential tail assumptions. In this paper, we first bring together various probabilistic inequalities for sums of independent random variables under much more general exponential type (namely sub-Weibull) tail assumptions. These results extract a part sub-Gaussian tail behavior in finite samples, matching the asymptotics governed by the central limit theorem, and are compactly represented in terms of a new Orlicz quasi-norm - the Generalized Bernstein-Orlicz norm - that typifies such tail behaviors. We illustrate the usefulness of these inequalities through the analysis of four fundamental problems in HD statistics. In the first two problems, we study the rate of convergence of the sample covariance matrix in terms of the maximum elementwise norm and the maximum k-sub-matrix operator norm which are key quantities of interest in bootstrap, HD covariance matrix estimation and HD inference. The third example concerns the restricted eigenvalue condition, required in HD linear regression, which we verify for all sub-Weibull random vectors through a unified analysis, and also prove a more general result related to restricted strong convexity in the process. In the final example, we consider the Lasso estimator for linear regression and establish its rate of convergence under much weaker than usual tail assumptions (on the errors as well as the covariates), while also allowing for misspecified models and both fixed and random design. To our knowledge, these are the first such results for Lasso obtained in this generality. The common feature in all our results over all the examples is that the convergence rates under most exponential tails match the usual ones under sub-Gaussian assumptions.
description: 68 pages; Revised version; To appear in Information and Inference: A Journal of the IMA
Die kirchliche Gemeinschaft als hermeneutisches Subjekt der aus der jüdisch-christlichen Erfahrung erwachsenen Tradition
Creators: name: Molari, Carlo
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 14 Nr. 3 (1978): Concilium: Internationale Zeitschrift für Theologie, Band 14, Heft 3
title: Different Sized Metal Reinforcement Insertion System Using Cartridge Replacement Mechanism for 3D Concrete Printer
Creators: name: Egawa, Ryo
name: Nezu, Shoichi
name: Nishijou, Keisuke
name: Ohno, Kazunori
name: Kojima, Shotaro
name: Okada, Yoshito
name: Asakawa, Tomoya
name: Kobayashi, Noriyuki
name: Nishiwaki, Tomoya
name: Kajita, Hideyuki
name: Miyazawa, Yuki
name: Tadokoro, Satoshi
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: 3D concrete printing (3DCP)
subject: Structural reinforcement
subject: Automatic reinforcement
subject: Metal cylinder reinforcement
subject: 62

description: 3D Concrete Printing (3DCP) systems with the additive manufac-turing (AM) method are attracting attention as a technology enabling highly free-shaped concrete structures. On the other hand, the discontinuous surfaces between the layers are structural weakness. To overcome this, we propose a printing method in which reinforcements are inserted to penetrate between layers during printing. The 3DCP using this proposed reinforcement method is ex-pected to create free-form structures with reinforcement that include curved sur-faces and overhangs without limiting the number of layers. However, a mecha-nism that inserts reinforcements of different sizes is needed to make freeform shapes. In this study, we propose a novel insertion system that enables the dif-ferent-sized reinforcements insertion by replacing the pre-loaded cartridges. The proposed insertion system is a compact size (250× 160 × 630 mm) and light weight (1.7 kg). Thus, it can be retrofitted to existing 3DCPs. It is mounted to the 3DCP nozzle and is controlled using the positioning mechanism of the 3DCP itself. By replacing the pre-loaded cartridge with the different-sized reinforce-ments, the device enables the automatic insertion of metal reinforcements of dif-ferent lengths (30 – 60 mm) in conjunction with the 3DCP. Inserting the rein-forcement through the linear bush reduced the surrounding voids of the inserted reinforcements by 99% compared to manual reinforcement insertion. Using the proposed reinforced system, we successfully demonstrated the applicability of the reinforced desk and chair-shaped structure, featuring curved surfaces and dimensions of 600 mm in height and 900 mm in length with the insertion of tai-lored length reinforcements based on the structure's geometry. This experiment highlighted the adaptability of reinforcement for complex and highly free-shaped geometries in concrete 3D printing.
description: Digital Concrete 2024 - Supplementary Proceedings
On the Tradeoff Between Accuracy and Complexity in Blind Detection of Polar Codes
Creators: name: Giard, Pascal
name: Balatsoukas-Stimming, Alexios
name: Burg, Andreas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Polar codes are a recent family of error-correcting codes with a number of desirable characteristics. Their disruptive nature is illustrated by their rapid adoption in the $5^{th}$-generation mobile-communication standard, where they are used to protect control messages. In this work, we describe a two-stage system tasked with identifying the location of control messages that consists of a detection and selection stage followed by a decoding one. The first stage spurs the need for polar-code detection algorithms with variable effort to balance complexity between the two stages. We illustrate this idea of variable effort for multiple detection algorithms aimed at the first stage. We propose three novel blind detection methods based on belief-propagation decoding inspired by early-stopping criteria. Then we show how their reliability improves with the number of decoding iterations to highlight the possible tradeoffs between accuracy and complexity. Additionally, we show similar tradeoffs for a detection method from previous work. In a setup where only one block encoded with the polar code of interest is present among many other blocks, our results notably show that, depending on the complexity budget, a variable number of undesirable blocks can be dismissed while achieving a missed-detection rate in line with the block-error rate of a complex decoding algorithm.
description: 5 pages, 4 figures, fixes typo in Sect. IV-D; presented at the International Symposium on Turbo Codes & Iterative Information Processing (ISTC) 2018
title: The potential of natural fiber reinforcement in 3D printed concrete: a review
Creators: name: Dias, J.
name: Brandão, Filipe
name: Figueiredo, Bruno
name: Cruz, Paulo
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: 3D printing concrete
subject: Additive Manufacturing (AM)
subject: Natural Fiber Reinforcement
subject: Review
subject: 62

description: 3D concrete printing has gained significant attention for its poten-tial to increase efficiency and material waste reduction in the construction in-dustry. However, for this new method to become more widely adopted, one of the key challenges that must be overcome is related to reinforcement necessity to control shrinkage cracking and increase tensile capacity. Conventional rein-forcement methods based on steel bars have a massive environmental impact. The steel industry is one of the most energy-consuming and CO2-emitting in-dustrial activities in the world. Natural fibers such as hemp, linen, or sisal, offer a compelling alternative to traditional steel bars and artificial fiber reinforce-ment due to their low environmental impact, biodegradability, and renewable sources. As a step towards developing more eco-friendly reinforcement strate-gies and resilient building materials, this paper presents a review of the feasibil-ity and benefits of incorporating natural fibers into the 3D concrete printing (3DCP) process. The research's key prospects are related to material optimiza-tion, printing process, structural performance, environmental impact, and build-ing applications. The literature review was conducted between September 2023 and February 2024 with the snowballing technique, using Web of Science and ResearchGate web search engines. The research approach focused on the exploration of the mechanical properties and compatibility of various natural fibers with concrete matrices to optimize the material composition for 3DCP. It was also relevant to analyze additional methods for structural reinforcement in the post-extrusion process. The main purpose was to categorize the mechanical properties gained in both processes to establish an ideal printing solution. An expected result would be developing opportunities to adapt 3D printing techniques to accommodate natural fiber-reinforced concrete, considering ex-trusion consistency, layer adhesion, and overall printability. That would allow access to the mechanical strength, durability, and flexibility of these new mate-rials applied to sustainable construction.
description: Digital Concrete 2024 - Supplementary Proceedings
Litocampa zaldivarae Sendra, Salgado & Monedero 2003
Creators: name: Sendra, Alberto
name: Reboleira, Ana Sofia P. S.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplura
Campodeidae
Litocampa
Litocampa zaldivarae

description: Litocampa zaldivarae Sendra, Salgado & Monedero, 2003
Litocampa zaldivarae Sendra, Salgado & Monedero, 2003: 76, fig. 7, tables 6–9.
Diagnosis (Sendra et al. 2003)
Body length 2.8–6.8 mm; epicuticle without microdenticles, smooth clothing setae; antennae with 30– 34 antennomeres; cupuliform organ with four to six thick, simple olfactory chemoreceptors; prominent frontal process; 1+1 ma, 1+1 la, 1+1 lp macrosetae on pronotum and mesonotum, 1+1 ma, 1+1 lp on metanotum; long, thick notal macrosetae with barbs along distal half; long marginal setae with barbs along distal half; one dorsal femoral macrosetae; calcars barbed almost from basis; one short ventral tibial machoseta; smooth apical tarsal setae; subequal grooved elbow-like claws with small and smooth lateral crests, smooth setiform telotarsal processes; 1+1 lp macrosetae on III urotergite, 2+2 lp on IV urotergite, 1+1 la, 2+2 lp on V–VII urotergites, 1+1 mp, 3+3 lp on VIII urotergite and 1+1 mp, 5+5 lp on IX abdominal segment; enlarged appendages of first urosternite in males with glandular a 2 -setae; subcylindrical appendages on females and also with glandular a 2 -setae; cerci longer than body covered in long macrosetae with barbs along distal one-third to half and smooth long clothing setae.
Habitat and distribution
Cave-dwelling species found in several caves across the southern slopes in the east of Cantabria towards the Basque Mountains (Sendra et al. 2003).
description: Published as part of Sendra, Alberto & Reboleira, Ana Sofia P. S., 2020, Euro-Mediterranean fauna of Campodeinae (Campodeidae, Diplura), pp. 1-130 in European Journal of Taxonomy 728 on pages 104-105, DOI: 10.5852/ejt.2020.728.1181, http://zenodo.org/record/4316883
Reproducibility in $G_0W_0$ Calculations for Solids
Creators: name: Rangel, Tonatiuh
name: Del Ben, Mauro
name: Varsano, Daniele
name: Antonius, Gabriel
name: Bruneval, Fabien
name: da Jornada, Felipe H.
name: van Setten, Michiel J.
name: Orhan, Okan K.
name: O'Regan, David D.
name: Canning, Andrew
name: Ferretti, Andrea
name: Marini, Andrea
name: Rignanese, Gian-Marco
name: Deslippe, Jack
name: Louie, Steven G.
name: Neaton, Jeffrey B.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ab initio many-body perturbation theory within the $GW$ approximation is a Green's function formalism widely used in the calculation of quasiparticle excitation energies of solids. In what has become an increasingly standard approach, Kohn-Sham eigenenergies, generated from a DFT calculation with a strategically-chosen exchange correlation functional ``starting point'', are used to construct $G$ and $W$, and then perturbatively corrected by the resultant $GW$ self-energy. In practice, there are several ways to construct the $GW$ self-energy, and these can lead to variations in predicted quasiparticle energies. For example, for ZnO and TiO$_2$, reported $GW$ fundamental gaps can vary by more than 1 eV. In this work, we address the convergence and key approximations in contemporary $G_0W_0$ calculations, including frequency-integration schemes and the treatment of the Coulomb divergence in the exact-exchange term. We study several systems,and compare three different $GW$ codes: BerkeleyGW, Abinit and Yambo. We demonstrate, for the first time, that the same quasiparticle energies for systems in the condensed phase can be obtained with different codes, and we provide a comprehensive assessment of implementations of the $GW$ approximation.
title: Development and Validation of Finite Element Constitutive Model for Meso-scale Compressive Fracture Behavior of 3D Printed Mortar
Creators: name: Yoshihara, Rei
name: Hashimoto, Katsufumi
name: Sugiyama, Takafumi
name: Nakase, Kota
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: Finite Element Method
subject: 3D Printed Concrete
subject: Meso-scale specimen
subject: Inter-filament voids
subject: 62

description: 3D concrete printing is expected to contribute the automation of con-struction industry. 3D printed object generally performs anisotropy and compli-cated fracture characteristics. The principal factors are inter-filament void and layer interface formed between adjacent filaments. Meso-scale finite element method (FEM) enables to model the complex structure of 3D printed object and to reproduce their fracture behavior. Additionally, the mechanical properties of printed material differ from those of material conventionally casted into mold. The objective of this study is to develop the constitutive model of printed (ex-truded and deposited) mortar for structural analysis. Compression test was per-formed on meso-scale specimens cut from printed filament. To eliminate the size effect, the results were converted into the equivalent characteristic values ob-tained in the standard cylindrical compression test. In order to validate the cor-rected model, FEM analysis output was compared with the experimental result. Moreover, compression test was conducted on 3D printed mortar specimen. The load-displacement behavior of the specimen was simulated using the constitutive model. As the results, the compression test of the meso-scale specimens clarified that the compressive strength and Young’s modulus of the printed mortar were lower than those of the cast mortar. When using the corrected constitutive model, the analysis result was well corresponding to the experimental result compared to the result using uncorrected model.
description: Digital Concrete 2024 - Supplementary Proceedings