cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 1: of PathMe: merging and exploring mechanistic pathway knowledge
Creators: name: Domingo-FernĂĄndez, Daniel
name: Mubeen, Sarah
name: MarĂ­N-LlaĂł, Josep
name: Hoyt, Charles
name: Hofmann-Apitius, Martin
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Science Policy
subject: Plant Biology

description: Supplementary Text. (PDF 442 kb)
Development of a feedforward laser control system for improving component consistency in Selective Laser Sintering
Creators: name: Phillips, Timothy Bryce
name: 0000-0002-8182-1841
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: Additive manufacturing
Selective Laser Sintering
Process control
Consistency

description: Selective Laser Sintering makes up a significant portion of the polymer additive manufacturing market and is often the process of choice for structurally significant polymer components. With its expanding market, especially among end-use components, comes a growing need for improving reproducibility. Components built using Selective Laser Sintering display a large range among their mechanical properties and it has been shown that the thermal history of the building process has a strong influence over these variations. Temperature fluctuations of just a few degrees can mean the difference between scrapped parts or those with excellent mechanical and dimensional properties. This dissertation will introduce a novel method of reducing temperature and mechanical variations among parts. Physical simulations and empirical measurements of laser-polymer interaction are evaluated and used to guide development of an advanced laser power controller. The feedforward control system developed uses thermal imagery and dynamic surrogate modeling to systematically modulate laser energy impinging on the polymer surface to homogenize post-sintering temperatures. Results from thermal and mechanical tests will be presented, showing the laser control system is capable of reducing standard deviations by up to 57% for post-sintering temperature and 45% for ultimate flexural strength.
Gravitational Collapse in Einstein dilaton Gauss-Bonnet Gravity
Creators: name: Ripley, Justin L
name: Pretorius, Frans
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present results from a numerical study of spherical gravitational collapse in shift symmetric Einstein dilaton Gauss-Bonnet (EdGB) gravity. This modified gravity theory has a single coupling parameter that when zero reduces to general relativity (GR) minimally coupled to a massless scalar field. We first show results from the weak EdGB coupling limit, where we obtain solutions that smoothly approach those of the Einstein-Klein-Gordon system of GR. Here, in the strong field case, though our code does not utilize horizon penetrating coordinates, we nevertheless find tentative evidence that approaching black hole formation the EdGB modifications cause the growth of scalar field "hair", consistent with known static black hole solutions in EdGB gravity. For the strong EdGB coupling regime, in a companion paper we first showed results that even in the weak field (i.e. far from black hole formation), the EdGB equations are of mixed type: evolution of the initially hyperbolic system of partial differential equations lead to formation of a region where their character changes to elliptic. Here, we present more details about this regime. In particular, we show that an effective energy density based on the Misner-Sharp mass is negative near these elliptic regions, and similarly the null convergence condition is violated then.
description: 35 pages, 11 figures, edited to resemble journal version
Scalar field fluctuations in Pre-Big-Bang Cosmologies
Creators: name: Lalak, Z.
name: Poppe, R.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Jordan-Brans-Dicke theories with a linearized potential for the scalar field are investigated in the framework of the stochastic approach. The fluctuations of this field are examined and their backreaction on the classical background is described. We compute the mode functions and analyze the time evolution of the variance of the stochastic ensemble corresponding to the full quantum scalar field in the pre-big-bang regime. We compute fluctuations of the term discriminating between the two branches of solutions present in the theory. We find, both analytically and upon direct integration of the stochastic equations of motion, that the dispersion of these fluctuations grows to achieve the magnitude of the term separating the two classical solutions. This means that the ensembles representing classical solutions which belong to different branches do overlap; this may provide a quantum mechanical realization at the level of field theory to change among solutions belonging to different branches.
description: 26 pages, Latex, 6 ps figures
Current-current correlations in a CuO_3 model system
Creators: name: Srinivasan, Bhargavi
name: Lepetit, Marie-Bernadette
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study a 3-band extended Hubbard model on a CuO_3 system by the density matrix renormalization group (DMRG) method. Our system has geometry similar to that of a section of the CuO_2 plane of the copper-oxide superconductors. We have studied the effects of nearest-neighbour repulsions on the current-current correlations of two model CuO_3 systems. We show that repulsive interactions are clearly capable of increasing the magnitude of the current-current correlations in both models studied. The long-distance behavior of the current-current correlations is qualitatively influenced by V. We show that repulsive interactions are capable of enhancing correlations involving at least one copper-oxygen rung over distances comparable to the length of the system. In some cases, V decreases the exponent corresponding to the power-law decay, leading to a considerable slowing down of the long-distance decay of the current-current correlations, compared to that of the Hubbard model.
description: 11 pages, 10 figures
New Non-Symmetric Orthogonal Basis for the Calogero Model with Distinguishable Particles
Creators: name: Ujino, Hideaki
name: Nishino, Akinori
name: Wadati, Miki
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We demonstrate an algebraic construction of all the simultaneous eigenfunctions of the conserved operators for distinguishable particles governed by the Calogero Hamiltonian. Our construction is completely parallel to the construction of the Fock space for decoupled quantum harmonic oscillators. The simultaneous eigenfunction does not coincide with the non-symmetric Hi-Jack polynomial, which shows that the conserved operators derived from the number operators of the decoupled quantum harmonic oscillators are algebraically different from the known ones derived by the Dunkl operator formulation.
description: 12pages, REVTeX
Robust and Interpretable Sequential Decision-Making for Healthcare
Creators: Grand-Clement, Julien
Publisher: name: Columbia University
Year: 2021
Subjects: Operations research
Health services administration
Medical care
Computer science
COVID-19 (Disease)
Decision making
Markov processes

description: Markov Decision Processes (MDP) is a common framework for modeling sequential decision-making problems, with applications ranging from inventory and supply chains to healthcare applications, autonomous driving and solving repeated games. Despite its modeling power, two fundamental challenges arise when using the MDP framework in real-worldapplications. First, the optimal decision rule may be highly dependent on the MDP parameters (e.g., transition rates across states and rewards for each state-action pair). When the parameters are miss-estimated, the resulting decision rule may be suboptimal when deployed in practice. Additionally, the optimal policies computed by state-of-the-art algorithms may not be interpretable and can be seen as a black-box. Among other reasons, this is problematic as the policy may not be understandable for the people that are supposed to operationalize it. In this thesis, we aim to broaden the applicability of the MDP framework by addressing the challenges of robustness and interpretability. In the first part of the thesis, we focus on robustness. We introduce a novel model for parameter uncertainty in Chapter 2, that is significantly less pessimistic than prior models of uncertainty while enabling the efficient computation of a robust policy. In Chapter 3, we consider a healthcare application, where we focus on proactively transferring patients of a hospital to the Intensive Care Unit, to ameliorate the overall survival rates and patients’ flow. In the second part of this thesis, we focus on interpretable algorithms, with an emphasis on the application to find novel triage protocols for ventilator allocations for COVID-19 patients. In Chapter 4, we introduce a simulation model to estimate the performance of the official New York State (NYS) triage protocol at various levels of shortages of ventilators, using a real data set of patients intubated during Spring 2020 because of COVID-19 complications. In Chapter 5, we introduce our algorithmic framework for computing interpretable (tree) policies and apply our methods to learn novel triage protocols.
Hibiscus vitifolius L.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malvales
Malvaceae
Hibiscus
Hibiscus vitifolius

description: Hibiscus vitifolius L.  —
Habit: Herb.
Habitat: LMWF, LMDF; up to 3 000 m. Distribution: I.
 Voucher: Ca. 3 miles Southeast Nanyuki Station, Alt. 2073 m, 18 Jun. 1943, Moreau & Moreau 21 (EA).
References: Fries & Fries (1924), Bussmann (1994), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 62, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Quantum Gravity near Apparent Horizon and Two Dimensional Dilaton Gravity
Creators: name: Oda, Ichiro
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the Hawking radiation in two dimensional dilaton black hole by means of quantum gravity holding near the apparent horizon. First of all, we construct the canonical formalism of the dilaton gravity in two dimensions. Then the Vaidya metric corresponding to the dilaton black hole is established where it is shown that the dilaton field takes a form of the linear dilaton. Based on the canonical formalism and the Vaidya metric, we proceed to analyze quantum properties of a dynamical black hole. It is found that the mass loss rate of the Hawking radiation is independent of the black hole mass and at the same time the apparent horizon recedes to the singularity as shown in other studies of two dimensional gravity. It is interesting that one can construct quantum gravity even near the curvature singularity and draw the same conclusion with respect to the Hawking radiation as the above-mentioned picture. Unfortunately, the present formalism seems to be ignorant of the contributions from the functional measures over the gravitational field, the dilaton and the ghosts.
description: 17 pages, phyzzx
Access Statistics of Articles Published in OAE journals Became More Transparnet.pdf
Creators: name: Li, Bill
Publisher: name: figshare
Year: 2020
Subjects: Uncategorized

description: Many publishers&journals only show the total numbers of aritcle view and PDF download of their articles to readers, so did OAE.
However, we make them more transparent now. Besides the total numbers of article view, PDF download, and citation in the sidebar, we added two bar charts and two pie charts at the bottom of every article published in OAE journals.
Screening $Λ$ in a new modified gravity model
Creators: name: Akarsu, Ozgur
name: Barrow, John D.
name: Board, Charles V. R.
name: Uzun, N. Merve
name: Vazquez, J. Alberto
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a new model of Energy-Momentum Squared Gravity (EMSG), called Energy-Momentum Log Gravity (EMLG), constructed by the addition of the term $f(T_{μν}T^{μν})=α\ln(λ\,T_{μν}T^{μν})$, envisaged as a correction, to the Einstein-Hilbert action with cosmological constant $Λ$. The choice of this modification is made as a specific way of including new terms in the right-hand side of the Einstein field equations, resulting in constant effective inertial mass density and, importantly, leading to an explicit exact solution of the matter energy density in terms of redshift. We look for viable cosmologies, in particular, an extension of the standard $Λ$CDM model. EMLG provides an effective dynamical dark energy passing below zero at large redshifts, accommodating a mechanism for screening $Λ$ in this region, in line with suggestions for alleviating some of the tensions that arise between observational data sets within the standard $Λ$CDM model. We present a detailed theoretical investigation of the model and then constrain the free parameter $α'$, a normalisation of $α$, using the latest observational data. The data does not rule out the $Λ$CDM limit of our model ($α'= 0$), but prefers slightly negative values of the EMLG model parameter ($α'= -0.032\pm 0.043$), which leads to the screening of $Λ$. We also discuss how EMLG relaxes the persistent tension that appears in the measurements of $H_0$ within the standard $Λ$CDM model.
description: 17 pages, 11 figures, 1 table; matches the version published in EPJC
Polar Homology
Creators: name: Khesin, Boris
name: Rosly, Alexei
Publisher: name: arXiv
Year: 2000
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: For complex projective manifolds we introduce polar homology groups, which are holomorphic analogues of the homology groups in topology. The polar k-chains are subvarieties of complex dimension k with meromorphic forms on them, while the boundary operator is defined by taking the polar divisor and the Poincare residue on it.
description: 19 pages
Additional file 1: of Blastomere movement post first cell division correlates with embryonic compaction and subsequent blastocyst formation
Creators: name: Ohata, Kazuki
name: Ezoe, Kenji
name: Miki, Tetsuya
name: Morita, Hirofumi
name: Ryoma Tsuchiya
name: Kaneko, Shigeru
name: Okimura, Tadashi
name: Uchiyama, Kazuo
name: Yabuuchi, Akiko
name: Kobayashi, Tamotsu
name: Montag, Markus
name: Kato, Keiichi
Publisher: name: figshare
Year: 2019
Subjects: subject: Biophysics
subject: Space Science
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology

description: Blastomere movement and embryonic development in each stage. (DOCX 21â kb)
Additional file 1 of Prognostic value of inflammatory markers for detecting anastomotic leakage after esophageal resection
Creators: name: Liesenfeld, Lukas F.
name: Sauer, Peter
name: Diener, Markus K.
name: Hinz, Ulf
name: Schmidt, Thomas
name: Müller-Stich, Beat P.
name: Hackert, Thilo
name: Büchler, Markus W.
name: Schaible, Anja
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 1: Table S1. Diagnostic accuracy of WBCC and CRP for anastomotic leakage after transthoracic esophageal resection in patients without neoadjuvant treatment.
Turraea holstii Gurke
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Sapindales
Meliaceae
Turraea
Turraea holstii

description: Turraea holstii Gürke  —
Habit: Small tree.
Habitat: LMWF; up to 2 500 m. Distribution: I.
 Voucher: Meru Forest, Alt. 1 847 m, 9 Aug. 2015, SAJIT 003890 & 003909 (HIB).
References: Fries & Fries (1925), Bussmann (1993, 1994), Bussmann & Beck (1995a, 1998).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 61, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
On the Casimir Elements of q-Algebras U'_q(so_n) and Their Eigenvalues in Representations
Creators: name: Gavrilik, A. M.
name: Iorgov, N. Z.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Quantum Algebra (math.QA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The nonstandard q-deformed algebras U'_q(so_n) are known to possess q-analogues of Gel'fand-Tsetlin type representations. For these q-algebras, all the Casimir elements (corresponding to basis set of Casimir elements of so(n)) are found, and their eigenvalues within irreducible representations are given explicitly.
description: 5 pages, LaTeX. Contribution to proceedings of III Int. Conf. "Symmetry in Nonlinear Mathematical Physics" (Kiev, 12-18 July, 1999)
Fracture of glassy materials as detected by real-time Atomic Force Microscopy (AFM) experiments
Creators: name: Celarie, F.
name: Prades, S.
name: Bonamy, D.
name: Dickele, A.
name: Ferrero, L.
name: Bouchaud, E.
name: Guillot, C.
name: Marliere, C.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied the low speed fracture regime for different glassy materials with variable but controlled length scales of heterogeneity in a carefully mastered surrounding atmosphere. By using optical and atomic force (AFM) microscopy techniques we tracked in real-time the crack tip propagation at the nanometer scale on a wide velocity range (1 mm/s and 0.1 nm/s and below). The influence of the heterogeneities on this velocity is presented and discussed. Our experiments revealed also -for the first time- that the crack advance proceeds through nucleation, growth and coalescence of nanometric damage cavities inside the amorphous phase, which generate large velocity fluctuations. The implications of the existence of such a nano-ductile fracture mode in glass are discussed.
description: 6 pages, 5 figures, submitted to Applied surface Science
Observational constraints on sign-changeable interaction models and alleviation of the $H_0$ tension
Creators: name: Pan, Supriya
name: Yang, Weiqiang
name: Singha, Chiranjeeb
name: Saridakis, Emmanuel N.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate various scenarios which include interaction forms between dark matter and dark energy that exhibit sign reverse, namely where the transfer of energy between the dark fluids changes sign during evolution. We study the large-scale inhomogeneities in such interacting scenarios and we confront them with the latest astronomical data. Our analysis shows that the sign-changeable interaction models are able to produce stable perturbations. Additionally, the data seem to slightly favor a non-zero interaction, however, within $1σ$ confidence level (CL) the scenarios cannot be distinguished from non-interacting cosmologies. We find that the best-fit value of the dark-energy equation-of-state parameter lies in the phantom regime, while the quintessence region is also allowed nevertheless at more than 2$σ$ CL. Examining the effect of the interaction on the CMB TT and matter power spectra we show that while from the simple spectra it is hard to distinguish the interacting case from $Λ$CDM scenario, in the residual graphs the interaction is indeed traceable. Moreover, we find that sign-changeable interaction models can reconcile the $H_0$ tension, however the $σ_8$ tension is still persisting. Finally, we examine the validity of the laws of thermodynamics and we show that the generalized second law is always satisfied, while the second derivative of the total entropy becomes negative at late times which implies that the universe tends towards thermodynamic equilibrium.
description: 20 pages, 7 Tables, 15 captioned figures; version accepted for publication by Physical Review D
Reclamation certification of plains coal mines in Alberta : experience from a practitioner perspective
Creators: name: Renkema, Kevin
name: MacKenzie, Dean
name: Tokay, Heather
Publisher: name: The University of British Columbia
Year: 2023

description: One of the end goals of reclamation and reclamation monitoring at coal mines in Alberta is to obtain a reclamation certificate; similar certification systems are in place in other jurisdictions. The certification process can often require a long timeframe with several rounds of audits, requests for and provision of additional/supplemental information and input from multiple stakeholders and subject matter experts. To complicate the matter further, a single set of reclamation criteria that apply to all mines have not been defined; each mine develops their own as part of their operating approval. The same is true with monitoring requirements, each mine defines these, and sometimes monitoring programs are not designed with reclamation certification in mind. After going through the certification process several times, we have learned some strategies that can help reduce these timeframes (and the associated frustration). We will discuss our experience from a practitioner’s perspective with certification of over 1,000 ha of reclaimed land split between three coal mines, to provide insight for certification relevant across jurisdictions. The key insights to be presented include planning for a reclamation certification and monitoring in advance, conducting a thorough background review, defining the application area, establishing specific reclamation goals/targets, maintaining effective communication with regulators, and preparing comprehensive application content.
Hibiscus aethiopicus L.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malvales
Malvaceae
Hibiscus
Hibiscus aethiopicus

description: Hibiscus aethiopicus L.  —
Habit: Herb.
Habitat: LMDF; up to 2 300 m. Distribution: I.
Voucher: N/A.
Reference: Fries & Fries (1924).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 62, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Abutilon longicuspe A. Rich.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malvales
Malvaceae
Abutilon
Abutilon longicuspe

description: Abutilon longicuspe Hochst. ex A.Rich.  —
Habit: Herb.
Habitat: LMWF, LMDF; up to 2 800 m. Distribution: I.
 Voucher: Lower Imenti Forest, Alt. 1 520 m, 8 Aug. 2015, SAJIT 003853 (HIB).
References: Blundell (1987), Bussmann (1994), Bussmann & Beck (1995a), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 61, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Symmetries and solvable models for evaporating 2D black holes
Creators: name: Cruz, J.
name: Navarro-Salas, J.
name: Navarro, M.
name: Talavera, C. F.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the evaporation process of a 2D black hole in thermal equilibrium when the ingoing radiation is switched off suddenly. We also introduce global symmetries of generic 2D dilaton gravity models which generalize the extra symmetry of the CGHS model.
description: 4 pages, Latex. Talk given at the Second Conference on Quantum Gravity and Constrained Dynamics. To appear in Proc. Supp. Nucl. Phys. B
Rogue pipelines, oil and amnesty: the social life of infrastructure in the Niger Delta
Creators: Gelber, Elizabeth
Publisher: name: Columbia University
Year: 2015
Subjects: Ethnology

description: In October 2009, the Nigerian government signed a cease-fire and amnesty agreement to end a decade-long conflict with local militias in the Niger Delta agitating for greater political participation. Only one year later, as the new peace deal was celebrated as a success, the former conflict area became host to a lucrative and burgeoning illegal bunkering operation. These practices, diverting oil from the legal oil infrastructure to an alternate set of pipelines and refineries, implicated former militants, government soldiers and oil company managers alike. What linkages exist between the dissolution of a political armed social movement and the new rash of pipeline breaches? The events in the Niger Delta are often depicted as the outcome of contest to control oil rents by the state, transnational oil companies and indigenous population. However, this project explores the obverse and often overlooked dynamics undergirding eruptions of violence and protest: the ecology of economies, labor practices and practical relationships that have flourished around the oil infrastructure. Tracing the ways these complex social worlds are anchored in the material and institutional practices of production, rather than a contest for oil rents, the dissertation exposes how nodes of control in the Niger Delta are rendered increasingly porous, rather than defined by discrete actors and interests. Based on 21 months of fieldwork in the Niger Delta, I argue that the lifeworlds entwined with the technological infrastructure help unsettle the dominant arguments about rent-dependant oil states and state violence. They point instead to how practices seeking to delimit the space of extraction and operator liability such as community development initiatives, community subcontracting agreements and safety and security policies have produced hidden perils and exclusions under the rubrics of inclusion, peace and collaboration. This argument is developed over the course of several ethnographically grounded chapters. The first offers a material history of how the oil infrastructure became literally and figuratively embedded within Nigeria’s social and political life. Successive chapters follow as production practices are reconfigured institutionally, materially and discursively around a set of rogue pipelines and illegal refineries in the wake of the amnesty. I explore the constellations of oil community development regimes and the promotion of Nigeria’s “new” democracy; the explosion of oil theft and the concept of the oil economy; and increasing securitization and subcontracting practices. The dissertation demonstrates how these shifting arrangements, seeking to manage spaces of extraction, also generate alternate imaginaries of power, sovereignty and economy and that they render possible interventions, such as large-scale oil bunkering systems, which often exceed any single locus of control.
Searching for Boosted Dark Matter via Dark-Strahlung
Creators: name: Kim, Doojin
name: Park, Jong-Chul
name: Shin, Seodong
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose a new search channel for boosted dark matter (BDM) signals coming from the present universe, which are distinct from simple neutrino signals including those coming from the decay or pair-annihilation of dark matter. The signal process is initiated by the scattering of high-energetic BDM off either an electron or a nucleon. If the dark matter is dark-sector U(1)-charged, the scattered BDM may radiate a dark gauge boson (called "dark-strahlung") which subsequently decays to a Standard Model fermion pair. We point out that the existence of this channel may allow for the interpretation that the associated signal stems from BDM, not from the dark-matter-origin neutrinos. Although the dark-strahlung process is generally subleading compared to the lowest-order simple elastic scattering of BDM, we find that the BDM with a significant boost factor may induce an O(10-20%) event rate in the parameter regions unreachable by typical beam-produced dark-matter. We further find that the dark-strahlung channel may even outperform the leading-order channel in the search for BDM, especially when the latter is plagued by substantial background contamination. We argue that cosmogenic BDM searches readily fall in such a case, hence taking full advantage of dark-strahlung. As a practical application, experimental sensitivities expected in the leading-order and dark-strahlung channels are contrasted in dark gauge boson parameter space, under the environment of DUNE far-detectors, revealing usefulness of dark-strahlung.
description: 9 pages, 4 figures, Journal-submitted version
title: Carbon Nanotubes – Quantum Wires to Artificial Muscles
Creators: name: Atkinson, Kaylene
name: Roth, Siegmar
Publisher: name: Cramer
Year: 2003
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Jahrbuch der BWG
subject: 54

description: Carbon nanotube research, whilst still in its infancy, has come a long way since their discovery in 1991. Considerable characterisation work is still to be done on nanotubes, however this requires a reliable production method of the raw material in sufficient volumes to enable thorough experimental analysis. As part of his fullerene research, fullerenes being of the same carbon family as carbon nanotubes, Wolfgang Kraetschmer made a major breakthrough in synthesis technology in 1990, with the resultant device now bearing his name and being used in nanotechnology research groups around the world.
Fullerene, C60, is a nearly spherical molecule composed of 60 carbon atoms arranged in pentagons and hexagons, like a soccer ball. Fullerenes are molecules with a well determined finite size (0.71nm for C60). Nanotubes, on the other hand, are tiny needle-like structures. A nanotube can be considered as a seamless roll of a graphene sheet, with a typical diameter of 1nm and lengths up to microns. Nanotubes are molecules in their cross section, but along the axis they are infinite solids. Nanotube physics is an interesting superposition of molecular physics in the cross section and solid state physics along the axis.
Managing the interface between humans and nature: a governance perspective
Creators: name: SPENCER, MICHAEL FREDERICK
Publisher: name: Monash University
Year: 2021
Subjects: subject: Law
subject: FOS: Law
subject: 150303 Corporate Governance and Stakeholder Engagement
subject: FOS: Economics and business
subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences

description: This thesis is concerned with governance arrangements that manage the interface between humans and nature. It explores why existing arrangements fail to provide stewardship of natural resources through three case studies: forests management in Australia, and water management in Australia and China. It focuses on three forms of governance: command and control, markets and collaboration. The thesis is interested in whether collaborative governance could be better utilised to enhance stewardship and explores the opportunities and constraints this form of governance faces in the context of the case studies. Based on qualitative and quantitative research in Australia and China, it builds a provisional model for water stewardship projects and proposes other measures that could address constraints faced by collaborative governance.
Pre-avalanche instabilities in a granular pile
Creators: name: Staron, Lydie
name: Vilotte, Jean-Pierre
name: Radjai, Farhang
Publisher: name: arXiv
Year: 2002
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We investigate numerically the transition between static equilibrium and dynamic surface flow of a 2D cohesionless granular system driven by a continuous gravity loading. This transition is characterized by intermittent local dynamic rearrangements and can be described by an order parameter defined as the density of critical contacts, e.g. contacts where the friction is fully mobilized. Analysis of the spatial correlations of critical contacts shows the occurence of ``fluidized'' clusters which exhibit a power-law divergence in size at the approach of the stability limit. The results are compatible with recent models that describe the granular system during the static/dynamic transition as a multi-phase system.
description: 9 pages, 6 figures, submitted to Phys. Rev. Lett
Role of Kinesins in Cytoplasmic Exploration by Adenovirus
Creators: Zhou, Jie
Publisher: name: Columbia University
Year: 2017
Subjects: Cytoplasm
Adenoviruses
Microtubules
Dynein
Cytology
Kinesin
Virology

description: A number of viruses exhibit microtubule-based bidirectional transport following cell entry. This behavior raises three questions: First, what mediates their transport along microtubules? Second, how do viruses recruit the motor proteins? Finally, how do they go to the right place by bidirectional transport in a variety of cell types with different microtubule organizations?  We studied these questions with Adenovirus 5 (Ad5), a virus with well characterized, dynein-mediated minus transport mechanism. One form of plus end directed motor, Kif5C, has been reported to disrupt Ad5 capsids at the Nuclear Pore Complexes(NPC), but the mechanisms and roles of microtubule plus end-directed Ad5 transport prior to this stage are largely unknown. Here we performed a RNAi screen of 38 microtuble plus end-directed kinesins, which implicated Kif5B (kinesin-1 family) in plus-end directed Ad5 transport, along with several other forms of kinesin. Kif5B knockdown caused an accumulation of Ad5 particles near the centrosomes in human pulmonary epithelial A549 cells. This effect was strongly enhanced by blocking Ad5 nuclear pore targeting with Leptomycin B and supports a role for Kif5B in Ad5 transport prior to NPC docking.  Kif5B RNAi was rescued by expression of any of the three Kif5 orthologues. We also found that Ad5 directly interacts with kinesin-1 via the capsid subunit Penton Base in a PH-independent manner. Together with our earlier studies, these findings reveal that Ad5 has evolved distinct recruitment mechanisms for cytoplasmic dynein and at least one form of kinesin-1 during early infection.
      Despite clear evidence for short-range linear microtubule-associated Ad5 transport, we found the overall behavior of most Ad5 particles to be stochastic at a larger time scale, by mean-square-displacement (MSD) analysis. We named this behavior "assisted diffusion''. In consistent with this mechanism, Ad5 was able to maintain a normal nuclear targeting after we displaced centrosomes away from the nucleus by inhibiting CDK1 in late G2 cells. We also directly observed Ad5 switching from microtubule based transport to nuclear targeting from a microtubule near the nucleus. Kif5B RNAi dramatically inhibited this novel microtubule-based random-walk/“assisted-diffusion” mechanism. By super resolution microscopy, we found a more local distribution of NPC attached Ad5 over the entire nuclear surface under conditions of Kif5B knock down. We propose that adenovirus uses independently-recruited kinesin and dynein to fully explore the cytoplasm to search for and dock at the nucleus, a mechanism of potential importance for physiological cargoes as well.
Instanton effects in string cosmology
Creators: name: Behrndt, Klaus
name: Forste, Stefan
name: Schwager, Stefan
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the gauge dyonic string solution of the K3 compactified heterotic string theory in a four dimensional cosmological context. Since for this solution Green-Schwarz as well as Chern-Simons corrections have been taken into account it contains both world sheet and string loop corrections. The cosmological picture is obtained by rotating the world volume of the gauge dyonic string into two space like dimensions and compactifying those dimensions on a two torus. We compare the result with gauge neutral extreme and non-extreme cosmologies and find that the non-trivial Yang Mills background leads to a solution without any singularities whereas for trivial Yang-Mills backgrounds some of the fields become always singular at the big bang.
description: 23 pages, Latex, psfig.sty, 5 figures, comment and reference added, final version to appear in Nucl. Phys. B
Using decision science to build trust in mine closure decisions
Creators: name: Schneider, Daniel
name: Haskett, William
name: Thrift, Andrew
Publisher: name: The University of British Columbia
Year: 2023

description: In today’s changing social and environmental landscape, society requires organizations to shift to an everevolving world of ‘tell me what you are doing’, through to ‘show me what impact you are having’, and now to ‘involve me in your work’. With public trust in mining at an all-time low globally (Dhawan 2023), decision transparency involving competing objectives and unavoidable trade-offs can help build trust with interest groups, titleholders, and regulators in mine closure decisions. Decision science offers a structured approach to integrate and weigh multiple perspectives on objectives, risks, trade-offs, and preferences, that supports efficient mine closure planning. Breaking complex decisions down using logical frameworks with a structured and transparent approach helps people gain a common understanding, so that they can identify and discuss objectives. It exposes options across competing objectives at the core of difficult decisions. In contrast to other approaches such as gut feel and ‘we’ve always done it this way’, it addresses multiple objective trade-offs directly. It is a conceptually intuitive and easily applied approach. An intentional shift to structured, logical thinking provides confidence and clarity resulting in higher efficiency projects, cost savings, and a significant reduction in re-work. A decision science approach includes: (1) front end facilitation to frame the decision or decision series, (2) assessment of the project objectives including potentially conflicting desires of internal or external interest groups, (3) divergent creative thinking to identify new alternatives that better fulfill the prioritized objectives, (4) qualitative and quantitative analysis to assess and contrast alternatives based on how well they fulfill desired objectives, (5) threat identification and uncertainty management aspects that will flow into the project management and execution phase of the closure. A healthy decision culture, where teams and decision-makers foster a culture of inquiry instead of advocacy allows people embrace creative conflict and curiosity around differing values and objective trade-offs. This results in a shared understanding, identifies superior alternatives, reduces risk, and accelerates project development. Our industry can benefit from adopting a decision science approach to the many important, complex decisions we all face, as we work to increase efficiency, reduce cost, and build trust in mine closure decisions.
Abutilon mauritianum Medik.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malvales
Malvaceae
Abutilon
Abutilon mauritianum

description: Abutilon mauritianum (Jacq.) Medik.  —
Habit: Herb.
Habitat: LMWF, LMDF; up to 2 200 m. Distribution: II.
 Voucher: Mount Kenya Forest, vicinity of Castle Forest Station, Alt. 2073 m, 5 Jan. 1967, Perdue & Kibuwa 8415 (EA, WAG).
References: Fries & Fries (1924), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 61, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Additional file 1: of Distinct clinical, neuroimaging and genetic profiles of late-onset cobalamin C defects (cb1C): a report of 16 Chinese cases
Creators: name: Xianling Wang
name: Yanhui Yang
name: Xuying Li
name: Cunjiang Li
name: Chaodong Wang
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Computational Biology

description: Table S1. Comparison of allele frequencies of identified mutations between our patients and other reports. (DOC 48 kb)
Semiclassical theory of current correlations in chaotic dot-superconductor systems
Creators: name: Samuelsson, P.
name: Buttiker, M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a semiclassical theory of current correlations in multiterminal chaotic dot-superconductor junctions, valid in the absence of the proximity effect in the dot. For a dominating coupling of the dot to the normal terminals and a nonperfect dot-superconductor interface, positive cross correlations are found between currents in the normal terminals. This demonstrates that positive cross correlations can be described within a semiclassical approach. We show that the semiclassical approach is equivalent to a quantum mechanical Green's function approach with suppressed proximity effect in the dot.
description: 5 pages, 3 figures
title: Kohlenstoff – ein ganz besonderer Stoff
Creators: name: Krätschmer, Wolfgang
Publisher: name: Cramer
Year: 2003
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Jahrbuch der BWG
subject: 54

description: Im Herbst 1985 erschien in der Zeitschrift NATURE der elf Jahre später mit dem Nobelpreis gewürdigte Artikel von H.W. Kroto, R.F. Curl, R.E. Smalley und Mitarbeitern über die Entdeckung des C60 Moleküls. Die Autoren hatten das Molekül nach dem exzentrischen amerikanischen Architekten R. Buckminster Fuller (1895-1983) "Buckminsterfulleren" getauft. Als ich zum ersten mal davon hörte, war meine prompte Reaktion: das ist doch nicht möglich! So ein Riesenmolekül und dann auch noch in Fußballform – erlauben sich die Autoren einen Aprilscherz? Aber das Erscheinungsdatum des Artikels war September; offenbar war es doch ernst gemeint! Man muss dazu wissen, dass zu dieser Zeit sehr wenig über molekularen Kohlenstoff bekannt war, wenn man von den Molekülen C2 und C3 absieht, die verhältnismäßig gut erforscht waren. Wir in Heidelberg bemühten uns gerade, die Absorptionsspektren der Kohlenstoffmoleküle C4 bis C7 zu identifizieren. Dabei benutzten wir die Methode der Matrix-Isolation von Kohlenstoffdampf, eine Technik, die William Weltner Mitte der 1960-iger Jahre eingeführt hatte und die es erlaubt, lineare Kohlenstoffmoleküle dieser Größe zu präparieren. Man erkennt: Der Abstand von da bis zum Fußball-C60 ist beträchtlich. Es ist daher keine Übertreibung zu sagen, dass die Entdeckung von C60 eine neue Dimension in der Erforschung molekularen Kohlenstoffs eröffnet hat. Das ist im wörtlichen Sinne zu verstehen. Von den damals bekannten kurzen linearen Ketten sind Kroto, Curl und Smalley zu großen, in sich geschlossenen Käfigmolekülen vorgestoßen. Ihre Entdeckung erinnerte die Forschergemeinschaft an die eigentlich altbekannte Tatsache, daß das Element Kohlenstoff mit Leichtigkeit komplexe Strukturen bilden kann. Diese Fähigkeiten verdanken wir ja auch das organische Leben, wie wir es kennen.
Ich habe damals nicht geahnt, dass wir in Heidelberg dieses wunderbar symmetrische C60 Molekül bereits produziert hatten, allerdings ohne es zu wissen. Es bietet sich daher an, etwas über die C60 Entdeckungsgeschichte zu erzählen. Der Leser möge verzeihen, denn diese Geschichte hat etwas romanhaftes an sich, und tatsächlich sind bereits Bücher darüber geschrieben und Filme gedreht worden – vornehmlich in England und den USA, wo die Darstellung von Forschung in der Öffentlichkeit eine lange, ungebrochene Tradition hat.
Hibiscus fuscus Garcke
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malvales
Malvaceae
Hibiscus
Hibiscus fuscus

description: Hibiscus fuscus Garcke  —
Habit: Herb.
Habitat: LMDF; up to 2 700 m. Distribution: II.
 Voucher: Naro Moru River Lodge, Alt. 1 950 m, 8 Aug. 1978, Zogg et al. 255/11 (EA, WAG, U).
References: Fries & Fries (1924), Agnew (2013).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 62, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464
Kosteletzkya begoniifolia Ulbr.
Creators: name: Zhou, Ya-Dong
name: Mwachala, Geoffrey
name: Hu, Guang-Wan
name: Wang, Qing-Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malvales
Malvaceae
Kosteletzkya
Kosteletzkya begoniifolia

description: Kosteletzkya begoniifolia Ulbr.  —
Habit: Herb.
Habitat: LMWF; 1 400–2 400 m. Distribution: II.
 Voucher: Near Lake Nkunga, Alt. 1 903 m, 8 Aug. 2015, SAJIT 003826 (HIB).
Reference: Fries & Fries (1924).
description: Published as part of Zhou, Ya-Dong, Mwachala, Geoffrey, Hu, Guang-Wan & Wang, Qing-Feng, 2022, Annotated checklist of the vascular plants of Mount Kenya, East Africa, pp. 1-108 in Phytotaxa 546 (1) on page 62, DOI: 10.11646/phytotaxa.546.1.1, http://zenodo.org/record/6550464