cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Structure Determination and Biochemical Characterization of a Putative HNH Endonuclease from Geobacter metallireducens GS-15
Creators: name: Xu, Shuang-Yong
name: Kuzin, Alexandre P.
name: Seetharaman, Jayaraman
name: Gutjahr, Alice
name: Chan, Siu-Hong
name: Chen, Yang
name: Xiao, Rong
name: Acton, Thomas B.
name: Montelione, Gaetano T.
name: Tong, Liang
Publisher: name: Columbia University
Year: 2013
Subjects: Dimers
Proteins--Structure
Endonucleases
Biochemistry
Molecular biology

description: The crystal structure of a putative HNH endonuclease, Gmet_0936 protein from Geobacter metallireducens GS-15, has been determined at 2.6 Å resolution using single-wavelength anomalous dispersion method. The structure contains a two-stranded anti-parallel β-sheet that are surrounded by two helices on each face, and reveals a Zn ion bound in each monomer, coordinated by residues Cys38, Cys41, Cys73, and Cys76, which likely plays an important structural role in stabilizing the overall conformation. Structural homologs of Gmet_0936 include Hpy99I endonuclease, phage T4 endonuclease VII, and other HNH endonucleases, with these enzymes sharing 15–20% amino acid sequence identity. An overlay of Gmet_0936 and Hpy99I structures shows that most of the secondary structure elements, catalytic residues as well as the zinc binding site (zinc ribbon) are conserved. However, Gmet_0936 lacks the N-terminal domain of Hpy99I, which mediates DNA binding as well as dimerization. Purified Gmet_0936 forms dimers in solution and a dimer of the protein is observed in the crystal, but with a different mode of dimerization as compared to Hpy99I. Gmet_0936 and its N77H variant show a weak DNA binding activity in a DNA mobility shift assay and a weak Mn2+-dependent nicking activity on supercoiled plasmids in low pH buffers. The preferred substrate appears to be acid and heat-treated DNA with AP sites, suggesting Gmet_0936 may be a DNA repair enzyme.
On the Concentration of Space Charge in the Vicinity of an Insulating Surface
Creators: name: Cassen, Benedict
Publisher: name: California Institute of Technology
Year: 1928
Subjects: Physics

description: The purpose of this investigation is the determination of the order of magnitude of the highest densities of space charge experimentally producible in the immediate vicinity of an insulating surface.  The first section of the paper is a theoretical analysis of the problem while the second section describes some simple experiments undertaken in order to obtain the necessary data to get a numerical answer for some particular insulating surfaces.
Reaction-Diffusion Theory in the Presence of an Attractive Harmonic Potential
Creators: name: Spendier, K.
name: Sugaya, S.
name: Kenkre, V. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Problems involving the capture of a moving entity by a trap occur in a variety of physical situations, the moving entity being an electron, an excitation, an atom, a molecule, a biological object such as a receptor cluster, a cell, or even an animal such as a mouse carrying an epidemic. Theoretical considerations have almost always assumed that the particle motion is translationally invariant. We study here the case when that assumption is relaxed, in that the particle is additionally subjected to a harmonic potential. This tethering to a center modifies the reaction-diffusion phenomenon. Using a Smoluchowski equation to describe the system, we carry out a study which is explicit in 1 dimension but can be easily extended for arbitrary dimensions. Interesting features emerge depending on the relative location of the trap, the attractive center and the initial placement of the diffusing particle.
The BRST quantisation of chiral BMS-like field theories
Creators: name: Figueroa-O'Farrill, José
name: Vishwa, Girish S
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The BMS$_3$ Lie algebra belongs to a one-parameter family of Lie algebras obtained by centrally extending abelian extensions of the Witt algebra by a tensor density representation. In this paper we call such Lie algebras $\hat{\mathfrak{g}}_λ$, with BMS$_3$ corresponding to the universal central extension of $λ= -1$. We construct the BRST complex for $\hat{\mathfrak{g}}_λ$ in two different ways: one in the language of semi-infinite cohomology and the other using the formalism of vertex operator algebras. We pay particular attention to the case of BMS$_3$ and discuss some natural field-theoretical realisations. We prove two theorems about the BRST cohomology of $\hat{\mathfrak{g}}_λ$. The first is the construction of a quasi-isomorphic embedding of the chiral sector of any Virasoro string as a $\hat{\mathfrak{g}}_λ$ string. The second is the isomorphism (as Batalin-Vilkovisky algebras) of any $\hat{\mathfrak{g}}_λ$ BRST cohomology and the chiral ring of a topologically twisted $N{=}2$ superconformal field theory.
description: v2: 28 pages. Fixed typos and added some references
Aconaemys sagei Pearson 1984
Creators: name: Woods, Charles A.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Octodontidae
Aconaemys
Aconaemys sagei

description: Aconaemys sagei Pearson, 1984. Jour. Zool. (London), 202:229. TYPE LOCALITY: Argentina, Neuquén Prov. 2 km S Cerro Quillén at Pampa de Hui Hui (1050 m). DISTRIBUTION: Known only from near Lago Quillén and Lago Hui Hui in Neuquén Prov. of Argentina, but reports suggest it might also occur in Malleco Prov. of Chile. STATUS: Locally abundant, but may have very limited distribution. COMMENTS: Much smaller than A. fuscus.
description: Published as part of Charles A. Woods, 1993, Order Rodentia - Suborder Hystricognathi, pp. 771-806 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 788, DOI: 10.5281/zenodo.7353083
“The Better Part of Valour Is Discretion”: Should the IRS Change or Surrender Its Oversight of Tax-Exempt Organizations?
Creators: name: Mayer, Lloyd Hitoshi
Publisher: name: Columbia University
Year: 2016
Subjects: subject: Tax administration and procedure
subject: Nonprofit organizations--Taxation--Law and legislation
subject: Legislative oversight
subject: Law
subject: FOS: Law
subject: Economics

description: Recent events have highlighted the difficulties the Internal Revenue Service faces when attempting to ensure that purportedly tax-exempt organizations in fact qualify for that status. The problems in this area go much deeper than a group of IRS employees subjecting certain organizations to greater scrutiny based on their political leanings, however. For decades members of the public, the media, the academy, and Congress have criticized the limited ability of the IRS to ensure that organizations claiming exemption from federal income tax in fact deserve that categorization. Yet examples of IRS failings in this area continue to arise with depressing frequency. This is not surprising given that oversight of exempt organizations is but one of many areas that suffers from major difficulties faced by the IRS as a whole, including shrinking resources, growing responsibilities, and increasing responsibility for determinations that go beyond those necessary for revenue collection. This Article draws on tax compliance literature to explore how the current level and methods of oversight for exempt organizations could be modified to improve compliance even given the existing resource constraints. It concludes that while marginal improvements in oversight are possible, there is no silver bullet to counter the IRS’s growing inability to oversee this area.  Part IV of this Article therefore turns to more radical proposals that would move the locus of oversight for exempt and particularly charitable organizations out of the IRS. The proposal that shows the most promise, but also is the most risky, would shift much of this role to a private, self-regulatory body overseen by the IRS. Given the current state of IRS oversight, this proposal deserves serious consideration.
A Comparative Study of Downlink MIMO Cellular Networks with Co-located and Distributed Base-Station Antennas
Creators: name: Liu, Zhiyang
name: Dai, Lin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: 94A15

description: Despite the common belief that substantial capacity gains can be achieved by using more antennas at the base-station (BS) side in cellular networks, the effect of BS antenna topology on the capacity scaling behavior is little understood. In this paper, we present a comparative study on the ergodic capacity of a downlink single-user multiple-input-multiple-output (MIMO) system where BS antennas are either co-located at the center or grouped into uniformly distributed antenna clusters in a circular cell. By assuming that the number of BS antennas and the number of user antennas go to infinity with a fixed ratio $L\gg 1$, the asymptotic analysis reveals that the average per-antenna capacities in both cases logarithmically increase with $L$, but in the orders of $\log_2 L$ and $\tfracα{2}\log_2 L$, for the co-located and distributed BS antenna layouts, respectively, where $α>2$ denotes the path-loss factor. The analysis is further extended to the multi-user case where a 1-tier (7-cell) MIMO cellular network with $K\gg 1$ uniformly distributed users in each cell is considered. By assuming that the number of BS antennas and the number of user antennas go to infinity with a fixed ratio $L\gg K$, an asymptotic analysis is presented on the downlink rate performance with block diagonalization (BD) adopted at each BS. It is shown that the average per-antenna rates with the co-located and distributed BS antenna layouts scale in the orders of $\log_2 \tfrac{L}{K}$ and $\log_2 \frac{(L-K+1)^{α/2}}{K}$, respectively. The rate performance of MIMO cellular networks with small cells is also discussed, which highlights the importance of employing a large number of distributed BS antennas for the next-generation cellular networks.
description: Submitted to IEEE Transactions on Wireless Communications
Prediction of Debye-Scherrer diffraction patterns in arbitrarily strained samples
Creators: name: Higginbotham, Andrew
name: McGonegle, David
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The prediction of Debye-Scherrer diffraction patterns from strained samples is typically conducted in the small strain limit. Although valid for small deviations from the hydrostat (such as the conditions of finite strength typically observed in diamond anvil cells) this assertion is likely to fail for the large strain anisotropies (often of order 10% in normal strain) such as those found in uniaixally loaded dynamic compression experiments. In this paper we derive a general form for the (θ_B, ϕ) dependence of the diffraction for an arbitrarily deformed sample in arbitrary geometry. We show that this formula is consistent with ray traced diffraction for highly strained computationally generated polycrystals, and that the formula shows deviations from the small strain solutions previously reported.
Harnessing Zn-Volatility for Compositional Tuning in PtZn Nanoalloy Catalysts
Creators: name: Yao, Bingqing
name: Xu, Chaokai
name: Tang, Yaxin
name: Du, Yankun
name: Tan, Shengdong
name: Dai, Sheng
name: Luo, Guangfu
name: He, Qian
Publisher: name: arXiv
Year: 2024
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Bimetallic nanoalloys have gained extensive attention due to their tunable properties and wide range of catalytic applications. However, achieving good compositional control in nanoalloy catalysts remains a formidable challenge. In this work, we demonstrate that heat treatment can be used to tune the composition of Pt-Zn nanoalloy catalysts, leveraging the volatile nature of zinc to enhance their performance in propane dehydrogenation. Through identical location (scanning) transmission electron microscopy (IL-(S)TEM) using an in-situ EM gas cell, as well as other complementary techniques, we observed that the zinc content of the Pt-Zn nanoalloy particles decreased over time of the heat treatment under hydrogen. The rate of change depends on the original composition of the particles, as well as the heat treatment conditions such as temperature and flow rate. Our experimental results and theoretical calculations suggest that Zn in the intermetallic phase might be more stable, providing an opportunity for precise tuning the nanoparticle compositions. This approach presents a viable strategy for developing better Pt-Zn catalysts for propane dehydrogenation.
The robust component structure of dense regular graphs and applications
Creators: name: Kühn, Daniela
name: Lo, Allan
name: Osthus, Deryk
name: Staden, Katherine
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: In this paper, we study the large-scale structure of dense regular graphs. This involves the notion of robust expansion, a recent concept which has already been used successfully to settle several longstanding problems. Roughly speaking, a graph is robustly expanding if it still expands after the deletion of a small fraction of its vertices and edges. Our main result allows us to harness the useful consequences of robust expansion even if the graph itself is not a robust expander. It states that every dense regular graph can be partitioned into `robust components', each of which is a robust expander or a bipartite robust expander. We apply our result to obtain (amongst others) the following. (i) We prove that whenever $\eps >0$, every sufficiently large 3-connected D-regular graph on n vertices with $D \geq (1/4 + \eps)n$ is Hamiltonian. This asymptotically confirms the only remaining case of a conjecture raised independently by Bollobás and Häggkvist in the 1970s. (ii) We prove an asymptotically best possible result on the circumference of dense regular graphs of given connectivity. The 2-connected case of this was conjectured by Bondy and proved by Wei.
description: final version, to appear in the Proceedings of the LMS. 36 pages, 1 figure
IRS Reform: Politics As Usual?
Creators: name: Lederman, Leandra
Publisher: name: Columbia University
Year: 2016
Subjects: subject: Tax administration and procedure
subject: Taxation--Political aspects
subject: Law
subject: FOS: Law
subject: Economics

description: The IRS is still reeling from accusations that it “targeted” Tea Party and other non-profit organizations. Although multiple government investigations found no politically motivated behavior—only mismanagement—Congressional hearings were quite inflammatory. Congress recently followed up those hearings with a set of IRS reforms. Congress’s approach is reminiscent of the late 1990s, when highly publicized Congressional hearings regarding alleged abuses by the IRS resulted in a major IRS reform and restructuring, although the allegations subsequently were largely debunked. This Article argues that the recent allegations against the IRS also were overblown. It looks to the aftermath of the 1998 IRS reform, which included a major downturn in enforcement, for lessons for the present day. The Article concludes that Congress as a whole can do a better job of keeping politics from undermining tax administration.
title: L'Amicizia D'Hercole, E Theseo; 1707
title: Componimento per Musica, et Introduzione al Ballo Della Gloria Dedicato all'Altezza Serenissima Della Prencipessa Maria Casimira Di Polonia
titleType: Subtitle
Creators: name: Capece, Carlo Sigismondo
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2016

description: Vorlageform des Erscheinungsvermerks: In Roma, 1707. Nella Stamperia di Antonio de' Rossi alla Piazza di Ceri
Octodon Bennett 1832
Creators: name: Woods, Charles A.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Octodontidae
Octodon

description: Octodon Bennett, 1832. Proc. Zool. Soc. Lond., 1832:46. TYPE SPECIES: Octodon cumingi Bennett, 1832 (= Sciurus degus Molina, 1782). SYNONYMS: Dendrobius.
description: Published as part of Charles A. Woods, 1993, Order Rodentia - Suborder Hystricognathi, pp. 771-806 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 788, DOI: 10.5281/zenodo.7353083
description: {"references": ["Molina, G. I. 1782. Saggio sulla storia naturale del Chili. Stamperia di S. Tommaso d'Aquino, Bologna."]}
Who Wins Residential Property Tax Appeals?
Creators: name: Johnson, Randall K.
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Tax protests and appeals
subject: Property tax
subject: Law
subject: FOS: Law
subject: Economics

description: This article explains who wins residential property tax appeals in Cook County, Illinois. It does so by collecting and combining public sector data, which has been recently released by the Cook County Assessor. The article then uses this data to compute three statistics. Lastly, it contextualizes each statistic in order to determine if some townships, or groups of townships, win more appeals than expected.
Star formation and accretion in the circumnuclear disks of active galaxies
Creators: name: Wutschik, Stephanie
name: Schleicher, Dominik R. G.
name: Palmer, Thomas S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We explore the evolution of supermassive black holes (SMBH) centered in a circumnuclear disk (CND) as a function of the mass supply from the host galaxy and considering different star formation laws, which may give rise to a self-regulation via the injection of supernova-driven turbulence. A system of equations describing star formation, black hole accretion and angular momentum transport was solved for an axisymmetric disk in which the gravitational potential includes contributions from the black hole, the disk and the hosting galaxy. Our model extends the framework provided by Kawakatu et al. (2008) by separately considering the inner and outer part of the disk, and by introducing a potentially non-linear dependence of the star formation rate on the gas surface density and the turbulent velocity. The star formation recipes are calibrated using observational data for NGC 1097, while the accretion model is based on turbulent viscosity as a source of angular momentum transport in a thin viscous accretion disk. We find that current data provide no strong constraint on the star formation recipe, and can in particular not distinguish between models entirely regulated by the surface density, and models including a dependence on the turbulent velocity. The evolution of the black hole mass, on the other hand, strongly depends on the applied star formation law, as well as the mass supply from the host galaxy. We suggest to explore the star formation process in local AGN with high-resolution ALMA observations to break the degeneracy between different star formation models.
description: 13 pages, 15 figures, 6 tables, accepted at A&A
Authors, Online
Creators: name: Gervais, Daniel
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Law and art
subject: Copyright--Art
subject: Authors
subject: Authorship
subject: Internet--Law and legislation
subject: Copyright
subject: Law
subject: FOS: Law
subject: Intellectual property

description: The copyright chapter of the Internet story is familiar to all of us by now: the Internet provides access to an incredible array and variety of cultural products from around the world. It is the Great Virtual Library, available at your local caf6 and everywhere else. It makes cultural products not only easier to access but also to modify (and to disseminate the modified versions). Because the Internet allows access and easy reuse, the Internet is the Global Meme Factory–it makes possible a great cycle of: (1) access to existing works; (2) copying them; (3) modifying them and (4) disseminating them, which repeats endlessly in various directions. The Internet offers major advantages for authors (though there are downsides, and I will discuss those later), users and new intermediaries.
A Simpler Verifiable Gift Tax
Creators: name: Gerzog, Wendy C.
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Taxpayer compliance
subject: Gifts--Taxation--Law and legislation
subject: Inheritance and transfer tax--Law and legislation
subject: Law
subject: FOS: Law
subject: Economics

description: The author proposes reforms to simplify the current federal gift tax system, foster uncomplicated outright transfers, eliminate valuation distortions, and increase taxpayer return compliance. In order to obtain those results, the author’s simpler verifiable gift tax would incorporate hard-to-complete rules of transfer taxation, harmonize the gift and estate tax regimes, and grant gift tax preference inducements to encourage the filing of timely gift tax returns.
Superfluid weight cross-over and critical temperature enhancement in singular flat bands
Creators: name: Jiang, Guodong
name: Törmä, Päivi
name: Barlas, Yafis
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Non-analytic Bloch eigenstates at isolated band degeneracy points exhibit singular behavior in the quantum metric. Here, a description of superfluid weight for zero-energy flat bands in proximity to other high-energy bands is presented, where they together form a singular band gap system. When the singular band gap closes, the geometric and conventional contributions to the superfluid weight as a function of the superconducting gap exhibit different crossover behaviors. The scaling behavior of superfluid weight with the band gap is studied in detail, and the effect on the Berezinskii-KosterlitzThouless (BKT) transition temperature is explored. It is discovered that tuning the singular band gap provides a unique mechanism for enhancing the supercurrent and critical temperature of two-dimensional (2D) superconductors.
Physical properties of high-mass clumps in different stages of evolution
Creators: name: Giannetti, A.
name: Brand, J.
name: Sanchez-Monge, A.
name: Fontani, F.
name: Cesaroni, R.
name: Beltran, M. T.
name: Molinari, S.
name: Dodson, R.
name: Rioja, M. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: (Abridged) Aims. To investigate the first stages of the process of high-mass star formation, we selected a sample of massive clumps previously observed with the SEST at 1.2 mm and with the ATNF ATCA at 1.3 cm. We want to characterize the physical conditions in such sources, and test whether their properties depend on the evolutionary stage of the clump. Methods. With ATCA we observed the selected sources in the NH3(1,1) and (2,2) transitions and in the 22 GHz H2O maser line. Ammonia lines are a good temperature probe that allow us to accurately determine the mass and the column-, volume-, and surface densities of the clumps. We also collected all data available to construct the spectral energy distribution of the individual clumps and to determine if star formation is already occurring, through observations of its most common signposts, thus putting constraints on the evolutionary stage of the source. We fitted the spectral energy distribution between 1.2 mm and 70 microns with a modified black body to derive the dust temperature and independently determine the mass. Results. The clumps are cold (T~10-30 K), massive (M~10^2-10^3 Mo), and dense (n(H2)>~10^5 cm^-3) and they have high column densities (N(H2)~10^23 cm^-2). All clumps appear to be potentially able to form high-mass stars. The most massive clumps appear to be gravitationally unstable, if the only sources of support against collapse are turbulence and thermal pressure, which possibly indicates that the magnetic field is important in stabilizing them. Conclusions. After investigating how the average properties depend on the evolutionary phase of the source, we find that the temperature and central density progressively increase with time. Sources likely hosting a ZAMS star show a steeper radial dependence of the volume density and tend to be more compact than starless clumps.
description: Published in A&A, Vol. 556, A16
Octodon bridgesi Waterhouse 1845
Creators: name: Woods, Charles A.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Octodontidae
Octodon
Octodon bridgesi

description: Octodon bridgesi Waterhouse, 1845. Proc. Zool. Soc. Lond., 1844:155 [1845]. TYPE LOCALITY: Chile, Curico Prov., Rio Teno. DISTRIBUTION: Chilean Andes from 34°15' to at least 40°S (Redford and Eisenberg, 1992). STATUS: Once common, but now quite rare (Redford and Eisenberg, 1992). COMMENTS: Massoia (1979:36) reported Octodon, perhaps bridgesi, from S Argentina. The chromosome no. is 2n=58.
description: Published as part of Charles A. Woods, 1993, Order Rodentia - Suborder Hystricognathi, pp. 771-806 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 788, DOI: 10.5281/zenodo.7353083
description: {"references": ["Redford, K. H., and J. Eisenberg. 1992. Mammals of the Neotropics, 2. The southern cone. University of Chicago Press, Chicago, IL, 430 pp."]}
title: AN EXAMINATION OF LOCAL FOOD AND AGRITOURISM
title: VALUE, PERCEPTIONS, DRIVERS, AND THE IMPACT OF COVID-19
titleType: Subtitle
Creators: name: Murray, Jessica Caroline
Publisher: name: Washington State University
Year: 2027
Subjects: subject: Agritourism
subject: COVID-19
subject: Hospitality
subject: Local Food
subject: Value
subject: Agriculture
subject: Tourism
subject: FOS: Economics and business

description: This dissertation is composed of three individual essays, each examining an individual aspect of the local food or agritourism industry. The first essay examines the aspects of local food that drive the consumption value of local foods and subsequent increases in personal and social enrichments as well as intentions to seek out local food in the future. Community and price value were determined to be the primary drivers of consumption value in the newly presented local food consumption value scale (LFCV). The COVID-19 pandemic was also found to positively impact consumers' local food-seeking behaviors. Essay two examines potential drivers of value creation in the agritourism context. Value creation was contextualized as consumer perceived value, using the PERVAL scale. Three dimensions of agritourism were found to have positive effects on the dimensions of PERVAL: intangible elements (educational, cultural, atmosphere, and community), tangible elements (physical good or products), and the nostalgic nature of agritourism. Each of these dimensions also led to increases in consumer perceptions of satisfaction and intention to revisit agritourism destinations in the future. Essay three examined the same three drivers of agritourism (intangible, tangible, and nostalgia) in the memory dominant logic framework of value creation. All three dimensions were found to exert positive effects on experience memorability, satisfaction, and intentions to revisit agritourism destinations. This dissertation extends the local food literature out of the tourism context, augments the limited research pertaining to the agritourism demands, and extends the application of the memory dominant logic framework to the agritourism context.
Academic Social Networking sites: A rough guide for researchers
Creators: name: Hughes, Katie
name: Kingsley, Danny
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018

description: Led by Katie Hughes (Office of Scholarly Communication, University Library) and Dr Anne Alexander (Cambridge Digital Humanities) Social networking services aimed specifically at academics boast millions of users. Academia.edu, one of the most successful commercial platforms in this area, claims 33 million people have signed up their service, sharing 10 million uploaded papers on a site which enjoys 36 million unique visitors a month. How can researchers, particularly those at the beginning of their academic careers, make effective use of academic social networking sites? What is the difference between sharing papers on a commercial platform such as Academia.edu, and open access publication and dissemination through institutional repositories or non-commercial services? What are the benefits and pitfalls of using academic social networks? PhD students and staff from the University of Cambridge have priority for bookings on this course - if the course appears fully booked and you fall into this category please contact the course organisers directly
Making Copyright Work for Authors Who Write to Be Read
Creators: name: Van Houweling, Molly Shaffer
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Law and art
subject: Copyright--Art
subject: Authors
subject: Authorship
subject: Copyright
subject: Law
subject: FOS: Law
subject: Intellectual property

description: As I prepared to speak on the topic of “academic perspectives” at the 2014 Kemochan Center Symposium Creation Is Not Its Own Reward: Making Copyright Work for Authors and Performers, I realized that the panel’s billing had multiple meanings for me. As a legal academic, I study the impact of copyright law on individual authors and the way that individual authors deploy copyright to manage their works. So that is one aspect of my academic perspective-that of an outsider observing authors’ relationships with copyright. But I also consider myself an author, as do other academics for whom writing scholarly books and articles is a job requirement. Most of us do not make money from selling copies of our works of authorship. But control over our works is nonetheless key to our professional endeavors, and copyright can be an important source of that control. Thus my second “academic perspective” is that of an academic author who wants copyright to work for her.

In my capacity as an academic author, I have joined with several of my Berkeley colleagues to establish an organization called Authors Alliance. We aim to represent fellow academics and other authors concerned with managing their rights in ways that ensure that their works are accessible to today’s readers and preserved for generations to come. Hence our motto: promoting authorship for the public good by supporting authors who write to be read. This is not a mission that is at odds with authors making money from their works. But it recognizes that whether a book or article makes money or not, we want it to be accessible now and in the future and thereby to contribute to our intellectual legacies.
Octodon degus
Creators: name: Woods, Charles A.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Octodontidae
Octodon
Octodon degus

description: Octodon degus (Molina, 1782). Sagg. Stor. Nat. Chile, p. 303. TYPE LOCALITY: Chile, Santiago Prov., Santiago. DISTRIBUTION: Chile, west slope of the Andes between Vallenar and Curico, to 1,200 m. STATUS: Common. SYNONYMS: alba, clivorum, cumingii, getulus, kutnmingii, pallidus, peruana. COMMENTS: Reviewed by Woods and Boraker (1975, Mammalian Species, 67). The chromosome no. is 2n=58.
description: Published as part of Charles A. Woods, 1993, Order Rodentia - Suborder Hystricognathi, pp. 771-806 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 788, DOI: 10.5281/zenodo.7353083
description: {"references": ["Woods, C. A., and D. Boraker. 1975. Octodon degus. Mammalian Species, 67: 1 - 5."]}
Taxing Publicly Traded Entities
Creators: name: Cauble, Emily
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Income tax--Law and legislation
subject: Corporations--Taxation--Law and legislation
subject: Law
subject: FOS: Law
subject: Economics

description: Publicly traded entities are generally treated as corporations for U.S. tax purposes. Under various exceptions, however, publicly traded entities may obtain special treatment if they earn predominately certain specified types of qualifying income. This Article examines potential rationales for granting special tax treatment to certain publicly traded entities. As the analysis in this Article will show, many of the potential rationales are unconvincing. In addition, to the extent that some rationales may be persuasive, the current rules are not designed in a way that best comports with these potential justifications. Therefore, reform is needed.

To reform the current system, this Article proposes narrowing the scope of what may be classified as qualifying income so that special tax treatment is bestowed upon publicly traded entities only when warranted by underlying policy justifications. Specifically, this Article proposes that income that is classified as qualifying income under current law should not be classified in that manner unless it is earned by holding a publicly traded asset. In addition, current law grants favorable treatment to all income earned by a publicly traded entity if and only if the entity earns predominately qualifying income. This Article assesses whether tax law should, instead, grant special tax treatment to only qualifying income earned by a publicly traded entity, but with the special treatment applying regardless of whether the entity earns predominately qualifying income. Ultimately, this Article concludes that, on balance, concerns about complexity justify continuation of a regime under which beneficial treatment applies to all income earned by a publicly traded entity if and only if the entity earns predominately qualifying income, provided that the scope of what may be classified as qualifying income is narrowed in the manner proposed by this Article.
title: Lis Poetica Actore Pallade, Junone Rea, Judice Jove; [1758]
title: Honoribus ... Domini Gregorii ... Monasterii Tegernseensis Abbatis ... In Annua Electionis Die Humillime dicata A Musis Tegernseensibus, XXIX. Januarii M.DCC.LVIII.
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2016

description: Latein. Singspiel
An Adaptive Shifted Power Method for Computing Generalized Tensor Eigenpairs
Creators: name: Kolda, Tamara G.
name: Mayo, Jackson R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 15A18, 15A69

description: Several tensor eigenpair definitions have been put forth in the past decade, but these can all be unified under generalized tensor eigenpair framework, introduced by Chang, Pearson, and Zhang (2009). Given mth-order, n-dimensional real-valued symmetric tensors A and B, the goal is to find $λ\in R$ and $x \in R^n$, $x \neq 0$, such that $Ax^{m-1} = λBx^{m-1}$. Different choices for B yield different versions of the tensor eigenvalue problem. We present our generalized eigenproblem adaptive power method (GEAP) method for solving the problem, which is an extension of the shifted symmetric higher-order power method (SS-HOPM) for finding Z-eigenpairs. A major drawback of SS-HOPM was that its performance depended in choosing an appropriate shift, but our GEAP method also includes an adaptive method for choosing the shift automatically.
A New Theory of Taxpayer Standing
Creators: name: Parks, James R.
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Constitutional law
subject: Citizen suits (Civil procedure)
subject: Expenditures, Public
subject: Law
subject: FOS: Law
subject: Economics

description: Flast v. Cohen, decided by the Supreme Court in 1968, articulated a narrow exception to the general rule that merely being a taxpayer does not provide the necessary standing to challenge an expenditure of government funds alleged to violate the Constitution. Since the time of Flast, the Court has steadily narrowed the exception, retreating from the underlying rationale of the Flast decision—a trend most recently observable in the Court’s decision in Arizona School Tuition Organization v. Winn. This Note proposes a new test for taxpayer standing which aims to preserve the doctrine, while remedying some its ills. Under this Note’s proposed test, taxpayer standing is appropriate when the following three factors are met: (1) the taxpayer’s status as a taxpayer bears a reasonable relationship to the challenged expenditure of government funds in question; (2) it is of practical necessity because the political system is structurally ill-equipped to provide a remedy for those who object to a particular expenditure of government funds alleged to violate the Constitution, or the taxpayer is a member of the class for whom the especial benefit of a constitutional limitation is intended to directly run; and (3) where no other plausible party has standing to challenge the alleged violation, leaving it functionally irremediable.
Gluon spectral functions and transport coefficients in Yang--Mills theory
Creators: name: Haas, Michael
name: Fister, Leonard
name: Pawlowski, Jan M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute non-perturbative gluon spectral functions at finite temperature in quenched QCD with the maximum entropy method. We also provide a closed loop equation for the spectral function of the energy-momentum tensor in terms of the gluon spectral function. This setup is then used for computing the shear viscosity over entropy ratio $η/s$ in a temperature range from about $0.4\, T_c$ to $4.5\, T_c$. The ratio $η/s$ has a minimum at about $1.25\, T_c$ with the value of about 0.115. We also discuss extensions of the present results to QCD.
description: 5 pages, 4 figures
A Framework for Phasor Measurement Placement in Hybrid State Estimation via Gauss-Newton
Creators: name: Li, Xiao
name: Scaglione, Anna
name: Chang, Tsung-Hui
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this paper, we study the placement of Phasor Measurement Units (PMU) for enhancing hybrid state estimation via the traditional Gauss-Newton method, which uses measurements from both PMU devices and Supervisory Control and Data Acquisition (SCADA) systems. To compare the impact of PMU placements, we introduce a useful metric which accounts for three important requirements in power system state estimation: {\it convergence}, {\it observability} and {\it performance} (COP). Our COP metric can be used to evaluate the estimation performance and numerical stability of the state estimator, which is later used to optimize the PMU locations. In particular, we cast the optimal placement problem in a unified formulation as a semi-definite program (SDP) with integer variables and constraints that guarantee observability in case of measurements loss. Last but not least, we propose a relaxation scheme of the original integer-constrained SDP with randomization techniques, which closely approximates the optimum deployment. Simulations of the IEEE-30 and 118 systems corroborate our analysis, showing that the proposed scheme improves the convergence of the state estimator, while maintaining optimal asymptotic performance.
description: accepted to IEEE Trans. on Power Systems
Text and Data Mining: One Year On
Creators: name: Kingsley, Danny
name: Hansen, Debbie
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018

description: These slides summarise the activites, events and initiatives that have taken place or are in progress in the year or so since the February 2017 University of Cambridge meeting 'Text and Data Mining Services: What can Cambridge libraries offer?' The presentation was made at the 'TDM: One Year On' meeting held at the University of Cambridge on 12th April 2018.
Octodon lunatus Osgood 1943
Creators: name: Woods, Charles A.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Octodontidae
Octodon
Octodon lunatus

description: Octodon lunatus Osgood, 1943. Field Mus. Nat. Hist. Pubi., Zool. Ser., 30:110. TYPE LOCALITY: Chile, Valparaiso Prov., Olmue. DISTRIBUTION: Coastal mountains of Valparaiso, Aconcagua, and Coquimbo Provs. (Chile) between 31°30' and 35°S. STATUS: Common. COMMENTS: Included in Octodon bridgesi by Tamayo and Frassinetti (1980:354). The chromosome no. is 2n=78 (Spotorno et al., 1988).
description: Published as part of Charles A. Woods, 1993, Order Rodentia - Suborder Hystricognathi, pp. 771-806 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 788, DOI: 10.5281/zenodo.7353083
description: {"references": ["Tamayo H., M., and D. Frassinetti C. 1980. Catalogo de los mamiferos fosiles y vivientes de Chile. Boletin de Museo Nacional de Historia Natural Chile (Santiago), 37: 323 - 399.", "Spotorno O., A. E., L. Walker, L. Contreras, J. Pincheira, and R. Fernandez-Donoso. 1988. Cromosomas ancestrales en Octodontidae y Abrocomyidae. Sociedad Genetica Chilensis, resumen no. R- 65, not paginated."]}
Disk entanglement entropy for a Maxwell field
Creators: name: Agon, Cesar A.
name: Headrick, Matthew
name: Jafferis, Daniel L.
name: Kasko, Skyler
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In three dimensions, the pure Maxwell theory with compact U(1) gauge group is dual to a free compact scalar, and flows from the Maxwell theory with non-compact gauge group in the ultraviolet to a non-compact free massless scalar theory in the infrared. We compute the vacuum disk entanglement entropy all along this flow, and show that the renormalized entropy F(r) decreases monotonically with the radius r as predicted by the F-theorem, interpolating between a logarithmic growth for small r (matching the behavior of the S^3 free energy) and a constant at large r (equal to the free energy of the conformal scalar). The calculation is carried out by the replica trick, employing the scalar formulation of the theory. The Renyi entropies for n>1 are given by a sum over winding sectors, leading to a Riemann-Siegel theta function. The extrapolation to n=1, to obtain the von Neumann entropy, is done by analytic continuation in the large- and small-r limits and by a numerical extrapolation method at intermediate values. We also compute the leading contribution to the renormalized entanglement entropy of the compact free scalar in higher dimensions. Finally, we point out some interesting features of the reduced density matrix for the compact scalar, and its relation to that for the non-compact theory.
description: 34 pages
Double helical plasmonic antennas
Creators: name: Tsarapkin, Aleksei
name: Zurak, Luka
name: Maćkosz, Krzysztof
name: Löffler, Lorenz
name: Deinhart, Victor
name: Utke, Ivo
name: Feichtner, Thorsten
name: Höflich, Katja
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Plasmonic double helical antennas are a means to funnel circularly polarized light down to the nanoscale. Here, an existing design tool for single helices is extended to the case of double helices and used to design antennas that combine large chiroptical interaction strength with highly directional light emission. Full-field numerical modeling underpins the design and provides additional insight into surface charge distributions and resonance widths. The helical antennas are fabricated by direct writing with a focused electron beam, a technique that is unrivaled in terms of spatial resolution and 3D shape fidelity. After the printing process, the structures are purified using ozone plasma at room temperature, resulting in the smallest continuous double helix antennas ever realized in gold. Fabricated antennas are studied regarding their polarization-dependent transmission behavior, which shows a large and broadband dissymmetry factor in the visible range. Since the polarization of light is an important tool for implementing logic functionality in photonic and quantum photonic devices, these helices are potential building blocks for future nanophotonic circuits, but also for chiral metamaterials or phase plates.
description: 17 pages with Supporting Information, 7 figures
Entanglement and Thermal Entropy of Gauge Fields
Creators: name: Eling, Christopher
name: Oz, Yaron
name: Theisen, Stefan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the universal logarithmic divergent term in the entanglement entropy of gauge fields in the Minkowski vacuum with an entangling sphere. Employing the mapping in arXiv:1102.0440, we analyze the corresponding thermal entropy on open Einstein universe and on the static patch of de Sitter. Using the heat kernel of the vector Laplacian we resolve a discrepancy between the free field calculation and the expected Euler conformal anomaly. The resolution suggests a modification of the well known formulas for the vacuum expectation value of the spin-1 energy-momentum tensor on conformally flat space-times.
description: 17 pages
Copyright Policy and the Problem of Generalizing
Creators: name: Subotnik, Eva E.
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Law and art
subject: Copyright--Art
subject: Copyright--Economic aspects
subject: Copyright
subject: Law
subject: FOS: Law
subject: Intellectual property

description: Today we have heard a variety of concerns expressed by professional authors, artists and performers. But one of the toughest aspects of determining how to make the copyright system work better is generalizing about what is and is not working. In these brief remarks, I would like to identify three areas that demonstrate this difficulty.

At the outset, a disclaimer: I took the animating theme of this Symposium to be the improvement of the financial stake of individual authors in some kind of direct way. This mode of analysis should be distinguished from other approaches, equally valid, that would seek out ways of benefitting individual creators by improving the financial position of Hollywood studios, record labels, publishers and the like. With that assumption stated, here are the three contexts that reflect the difficulty in generalizing: (1) the issue of identifying the kinds of creative activity that should properly be the focus of the copyright system; (2) the issue of evaluating copyright law’s application to the Internet, which is both a catalyst for and detractor from profitable authorship; and (3) the issue of framing the costs of enforcing copyright interests.
Involutions of real intervals
Creators: name: Zampieri, Gaetano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: This paper shows a simple construction of the continuous involutions of real intervals in terms of the continuous even functions. We also study the smooth involutions defined by symmetric equations. Finally, we review some applications, in particular the characterization of the isochronous potentials by means of smooth involutions.