cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sequential intermolecular hydroamination of alkynes and amines towards the synthesis of nitrogen-containing compounds
Creators: name: Lui, Erica Kwei Jen
Publisher: name: University of British Columbia
Year: 2019

description: This thesis details the development of sequential intermolecular hydroamination of alkynes with amines followed by other reactions for the synthesis nitrogen-containing compounds, such as amines and heterocycles. The main feature of this thesis is the use of a bis(amidate)bis(amido)titanium complex, also known as the Schafer titanium catalyst, for the catalytic intermolecular hydroamination of terminal and internal alkynes. The catalytic synthesis of linear secondary amines using the Schafer titanium catalyst was accomplished through an intermolecular hydroamination of terminal alkynes followed by a Pd/C hydrogenation. The clean formation of products allowed for a facile synthesis and isolation of 23 examples of secondary amines in yields of 33-99%. The developed methodology allows for the synthesis of a variety of secondary amines containing aryl or alkyl substituents within a few hours and without the need for column chromatography. The selective anti-Markovnikov hydroamination of alkynes and ammonia remains a challenge. The first example of a hydroamination reaction with N-silylamine as an ammonia surrogate is disclosed in this thesis. Synthesis of anhydrous N-silylamine was accomplished using gaseous ammonia and tert-butyldimethylchlorosilane, which was then reacted with a variety of terminal and internal alkynes, leading to the synthesis of 25 examples of N- silylenamines in yields of 54-99%. The synthesis of primary amines (9 examples) was also accomplished upon treatment of the reaction mixture with palladium on carbon (Pd/C) and H₂. The isolation and characterization of key organometallic titanium-imido complexes was performed to probe the mechanism of the hydroamination reaction. Computational studies were also performed to study the preference of the N-silylenamine over the N-silylimine tautomer. Upon the remark that N-silylenamines were observed exclusively in the majority of cases, it was reasoned that such synthons could be used towards the synthesis of pyridines. Following the reported hydroamination reaction, a large variety of pyridines were formed with the addition of α,β-unsaturated followed by an oxidation event. This methodology allowed for the synthesis of 47 examples of mono-, di-, tri-, tetra-, and penta-substituted pyridines in yields of 11-96%.
A new Jeans resolution criterion for (M)HD simulations of self-gravitating gas: Application to magnetic field amplification by gravity-driven turbulence
Creators: name: Federrath, Christoph
name: Sur, Sharanya
name: Schleicher, Dominik R. G.
name: Banerjee, Robi
name: Klessen, Ralf S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Cosmic structure formation is characterized by the complex interplay between gravity, turbulence, and magnetic fields. The processes by which gravitational energy is converted into turbulent and magnetic energies, however, remain poorly understood. Here, we show with high-resolution, adaptive-mesh simulations that MHD turbulence is efficiently driven by extracting energy from the gravitational potential during the collapse of a dense gas cloud. Compressible motions generated during the contraction are converted into solenoidal, turbulent motions, leading to a natural energy ratio of E_sol/E_tot of approximately 2/3. We find that the energy injection scale of gravity-driven turbulence is close to the local Jeans scale. If small seeds of the magnetic field are present, they are amplified exponentially fast via the small-scale dynamo process. The magnetic field grows most efficiently on the smallest scales, for which the stretching, twisting, and folding of field lines, and the turbulent vortices are sufficiently resolved. We find that this scale corresponds to about 30 grid cells in the simulations. We thus suggest a new minimum resolution criterion of 30 cells per Jeans length in (magneto)hydrodynamical simulations of self-gravitating gas, in order to resolve turbulence on the Jeans scale, and to capture minimum dynamo amplification of the magnetic field. Due to numerical diffusion, however, any existing simulation today can at best provide lower limits on the physical growth rates. We conclude that a small, initial magnetic field can grow to dynamically important strength on time scales significantly shorter than the free-fall time of the cloud.
description: 17 pages, 13 figures, ApJ accepted, more info at http://www.ita.uni-heidelberg.de/~chfeder/pubs/dynamo/dynamo.shtml?lang=en
Trabajos sobre física
Creators: name: Barriga, Antonio M.¬Cuervo, José Vicente¬Navia, Jorge
Publisher: name: Universidad del Rosario
Year: 1913

description: Informe de la clase de Física al profesor Liborio Zerda. En este informe, los estudiantes determinaron la altura del cerro del Guadalupe aplicando tablas barométricas y el método del Sabio Caldas.
$w$-cosmological singularities
Creators: name: Fernández-Jambrina, L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 04.20.Dw, 98.80.Jk, 95.36.+x

description: In this paper we characterize barotropic index singularities of homogeneous isotropic cosmological models. They are shown to appear in cosmologies for which the scale factor is analytical with a Taylor series in which the linear and quadratic terms are absent. Though the barotropic index of the perfect fluid is singular, the singularities are weak, as it happens for other models for which the density and the pressure are regular.
description: 5 pp, revtex4.cls, to appear in Physical Review D
Davis Conklin House
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Photographs
Dwellings
Buildings
Structures
Conklin Family
Amagansett

description: Image shown is the Davis Conklin House. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
Etude consommateurs sur les produits traditionnels de porcs de race locale : attentes et évaluation hédonique
Creators: name: LEBRET, Bénédicte
name: KALLAS, Zein
name: LENOIR, Herveline
name: PERRUCHOT, Marie-Hélène
name: VITALE, Mauro
name: OLIVER, Maria Angels
Publisher: name: Zenodo
Year: 2019

description: Assessing consumers’ acceptability of traditional pork products (TPP) from local breeds is part of evaluating the sustainability of local chains. Expectations and hedonic perception of Protected Designation of Origin (PDO) Noir de Bigorre (NB) dry-cured ham produced from the pure Gascon breed were assessed. The study was conducted in Toulouse (France), as an expanding market for TPP, with 124 consumers who regularly purchased TPP (quota sampling method). Three products were used: “NB-PDO dry-cured ham 24-month curing – local pig breed in extensive system” (NB24), “NB-PDO dry-cured ham 36-month curing – local pig breed in extensive system” (NB36) as an innovative TPP to enhance sensory quality, and “Iberian ham – 50% Iberian pig” (IB) as a competing product. Following the expectation disconfirmation theory, the sensory test included three phases: blind (tasting without information), expected (product description only) and actual liking (tasting with information), using a 9-point scale from 1 (extremely dislike) to 9 (extremely like). Data were analysed using a mixed linear model including the effects of product, phase, interaction between product and phase, consumer session as random, and considering repeated measures within consumer. The blind hedonic test showed no differences (P>0.05) among products, which all had high blind liking scores (6.7-6.8). Product description strongly influenced expected liking (P<0.001), with a higher score for NB36 than NB24 (7.8 vs 7.2, respectively, P<0.05) and the lowest score for IB (5.2). The informed hedonic test showed higher actual liking scores for NB36 and NB24, which were similar, than for IB (7.4 and 7.2 vs 5.9, respectively, P<0.001). Both NB hams had higher actual liking than blind liking scores (P<0.05), denoting a positive effect of information on acceptability. Actual liking was similar to expected liking for NB24, indicating fulfilment of hedonic expectations. In contrast, actual liking was lower than blind liking for IB (P<0.05). This study will be supplemented by a study of consumer preferences and willingness to pay.
Observational Constraints on the Model Parameters of a Class of Emergent Universe
Creators: name: Ghose, S.
name: Thakur, P.
name: Paul, B. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A class of Emergent Universe (EU) model is studied in the light of recent observational data. Significant constraints on model parameters are obtained from the observational data. Density parameter for a class of model is evaluated. Some of the models are in favour of the recent observations. Some models have been found which are not interesting yielding unrealistic present day value of the density parameter.
description: Uses mn2e class file, 5 pages, 9 figures. (submitted to MNRAS)
La eucaristía y la unión de los hombres entre sí
Creators: name: Guibergues, (Monseñor)
Publisher: name: Universidad del Rosario
Year: 1913

description: Se resalta la importancia de la eucaristía como la unión divina entre gracia y caridad, desembocando en la unión humana en caridad, la unión intima de todos los hombres por el amor.
Sobre minas
Creators: name: Arias Mejía, Gerardo
Publisher: name: Universidad del Rosario
Year: 1913

description: Fragmentos de una tesis que se estaba preparando sobre la adquisición de minas por parte de extranjeros. En ella el autor hace un análisis cronológico  de la explotación de minas de oro y plata en el periodo colonial en la Nueva Granada y hasta después de la formación republicana en 1886.
Ecological Forecasting Student Resource: Overview of Forecasting, Potential Careers, Helpful Courses
Creators: name: Sjodin, Anna
name: Haber, Lisa
name: LaDeau, Shannon
name: Willson, Alyssa
name: Lofton, Mary
name: Moore, Tadhg
name: Tabares-Mendoza, Olivia
name: Dalbotten, Diana
name: McLachlan, Jason
name: Dietze, Michael
name: Peters, Jody
Publisher: name: QUBES Educational Resources
Year: 2021

description: Are you an undergraduate or graduate student interested in learning more about ecological forecasting? Or do you work with students that are exploring career options? This is short resource provides suggestions of careers and examples of courses.
Deformation of half-BPS solution in ABJM model and instability of supermembrane
Creators: name: Kuroki, Tsunehide
name: Miwa, Akitsugu
name: Okuda, Satoshi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is well-known that a supermembrane in the light-cone gauge has a continuous spectrum and is unstable. Physical interpretation of this instability is that a supermembrane can have a long thin tube without cost of energy and consequently it becomes a spiky configuration in which multiple membranes are connected by thin tubes. On the other hand, the ABJM model was proposed as a low-energy description of multiple M2-branes in the static gauge. It is natural that an M2-brane is also unstable in this gauge if we believe the physical picture in the light-cone gauge. In order to examine this, we construct a BPS solution explicitly both in the Nambu-Goto action of a supermembrane in the static gauge and in the U(1){\times}U(1) ABJM model, which represents intersecting M2-branes. Since this configuration is regarded as a single M2-brane emitting another one, we study the instability of an M2-brane by analyzing fluctuations around it. We show that a zero mode exists which can deform the configuration. For comparison, we also examine a similar configuration on the D2-brane and check that it does not have such zero modes under a fixed string charge. Furthermore we confirm that the novel Higgs mechanism translates our BPS solution in the ABJM model into that in the D2-brane world volume theory, where the winding number of the former around the fixed point of the orbifold becomes the number of strings ending on the D2-brane in the latter.
description: 27 pages
Noise-adapted qudit codes for amplitude-damping noise
Creators: name: Dutta, Sourav
name: Biswas, Debjyoti
name: Mandayam, Prabha
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum error correction (QEC) plays a critical role in preventing information loss in quantum systems and provides a framework for reliable quantum computation. Identifying quantum codes with nice code parameters for physically motivated noise models remains an interesting challenge. While past work has primarily focused on qubit codes, here we identify a $[4,1]$ qudit error correcting code tailored to protect against amplitude-damping noise. We show that this four-qudit code satisfies the error correction conditions for all single-qudit and a few two-qudit damping errors up to the leading order in the damping parameter $γ$. We devise a protocol to extract syndromes that unambiguously identify this set of errors, leading to a noise-adapted recovery scheme that achieves a fidelity loss of $\mathcal{O}(γ^{2})$. For the $d=2$ case, our QEC scheme is identical to the known example of the $4$-qubit code and the associated syndrome-based recovery. We also assess the performance of this code using the Petz recovery map and note some interesting deviations from the qubit case. Finally, we generalize this construction to a family of $[2M+2, M]$ qudit codes that can approximately correct all the single-qudit and a few two-qudit amplitude-damping errors.
description: 13 + 5 pages, 7 figures, 2 + 1 tables
Fast computation of observed cross section for $ψ^{\prime} \to PP$ decays
Creators: name: Bo-Qun, Wang
name: Xiao-Hu, Mo
name: Ping, Wang
name: Yong, Ban
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: It has been conjectured that the relative phase between strong and electromagnetic amplitudes is universally $-90^{\circ}$ in charmonium decays. $ψ^{\prime}$ decaying into pseudoscalar pair provides a possibility to test this conjecture. However, the experimentally observed cross section for such a process is depicted by the two-fold integral which takes into account the initial state radiative (ISR) correction and energy spread effect. Using the generalized linear regression approach, a complex energy-dependent factor is approximated by a linear function of energy. Taking advantage of this simplification, the integration of ISR correction can be performed and an analytical expression with accuracy at the level of 1% is obtained. Then, the original two-fold integral is simplified into a one-fold integral, which reduces the total computing time by two orders of magnitude. Such a simplified expression for the observed cross section usually plays an indispensable role in the optimization of scan data taking, the determination of systematic uncertainty, and the analysis of data correlation.
description: 8 pages, 5 figures
Phosphorus-containing macromolecules for fluorescence-based sensing applications
Creators: name: Mackenzie, Harvey Kyle
Publisher: name: University of British Columbia
Year: 2020

description: This thesis outlines the synthesis and properties of phosphorus containing polymers and their model compounds. The incorporation of phosphorus in these systems leads to interesting photophysical properties that are dependent on the chemical environment of the phosphorous atoms. The photophysical properties of these materials can be useful for fluorescent based sensing. Small-molecule model compounds were used for testing the viability of various alkynes for polymerization. Notably the synthesized model compounds were shown to display an affinity for metal salts, specifically for gold(I) and gold(III). Fluorenyl and thiophene containing derivatives were also synthesized along with the first example of a thiophene containing poly(p-phenylenediethynylene phosphine) (PPYP). These systems undergo fluorescence upon oxidation of the phosphorus centers and could be useful for the detection of reactive oxygen species. To increase the emissive properties of PPYPs, fluorenyl-containing derivatives were synthesized. These polymers were shown to be highly emissive upon oxidation (Φsoln = 0.30) and were tested as fluorescent-based sensors for a variety of metal analytes. Interestingly, the polymers and their corresponding model compounds displayed a large fluorescence increase upon coordination to gold(I) and gold(III) while the presence of other metals such as Rh(I) resulted in no significant fluorescence response. This research represents the first use of a polymer as a fluorescence-based sensor for the detection of gold ions.
An exact CKM matrix related to the approximate Wolfenstein form
Creators: name: Kim, Jihn E.
name: Seo, Min-Seok
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Noting the hierarchy between three mixing angles, $θ_{2,3}={\cal O}(θ_1^2)$, we present an exact form of the quark mixing matrix, replacing Wolfenstein's approximate form. In addition, we suggest to rotate the unitarity triangle, using the weak CP phase convention where the phase is located at the (31) element $\sinθ_1\sinθ_2 e^{iδ}$ while the (13) element $\sinθ_1\sinθ_3$ is real. For the $(ab)$ unitarity triangle, the base line (x-axis) is defined from the product of the first row elements, $V_{1a}V^*_{1b}$, and the angle between two sides at the origin is defined to be the phase $δ$. This is a useful definition since every Jarlskog triangle has the angle $δ$ at the origin, defined directly from the unitarity condition. It is argued that $δ$ represents the barometer of the weak CP violation, which can be used to relate it to possible Yukawa textures.
description: 5 pages with 2 figures
Assistive Technology in China - policy framework, service delivery, and industry development.pdf
Creators: name: He, Biao
name: Halvorsen, Rune
Publisher: name: figshare
Year: 2021
Subjects: subject: 160512 Social Policy
subject: FOS: Political science

description: China has a large number of persons with disabilities, which reflect a high demand on assistive technologies (AT). To promote the social participation of persons with disabilities, China has been taking substantial policy measures, in terms of social regulative and redistribute policies, to ensure the provision of AT. This article aims to layout the Chinese policy framework aiming at advancing the provision of AT and illustrate how AT can be delivered in the "local-county-prefecture-province" network in China. This article also highlights the efforts China has made in developing the industry of AT in latest years. Despite notable achievements, this article argues that the provision of AT still face a number of challenges and limitation.
Synthesis, Characterization, and Modeling of Naphthyl-Terminated sp Carbon Chains: Dinaphthylpolyynes
Creators: name: Cataldo, Franco
name: Ravagnan, Luca
name: Cinquanta, Eugenio
name: Castelli, Ivano Eligio
name: Manini, Nicola
name: Onida, Giovanni
name: Milani, Paolo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We report a combined study on the synthesis, spectroscopic characterization and theoretical modelling of a series of α,ω-dinaphthylpolyynes. We synthesized this family of naphtyl-terminated sp carbon chains by reacting diiodoacetylene and 1-ethynylnaphthalene under the Cadiot-Chodkiewicz reaction conditions. By means of liquid chromatography (HPLC), we separated the products and recorded their electronic absorption spectra, which enabled us to identify the complete series of dinaphthylpolyynes Ar-C2n-Ar (with Ar = naphthyl group and n = number of acetilenic units) with n ranging from 2 to 6. The longest wavelength transition (LWT) in the electronic spectra of the dinaphthylpolyynes red shifts linearly with n away from the LWT of the bare termination. This result is also supported by DFT-LDA simulations. Finally, we probed the stability of the dinaphthylpolyynes in a solid-state precipitate by Fourier-transform infrared spectroscopy and by differential scanning calorimetry (DSC).
description: This document is the unedited Author's version of a Submitted Work that was subsequently accepted for publication in [J. Phys. Chem. B], copyright \c{opyright} American Chemical Society after peer review. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021%2Fjp104863v
Discovery of a faint X-ray counterpart and of a parsec-long X-ray tail for the middle-aged, gamma-ray only pulsar PSR J0357+3205
Creators: name: De Luca, A.
name: Marelli, M.
name: Mignani, R. P.
name: Caraveo, P. A.
name: Hummel, W.
name: Collins, S.
name: Shearer, A.
name: Parkinson, P. M. Saz
name: Belfiore, A.
name: Bignami, G. F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Large Area Telescope (LAT) onboard the Fermi satellite opened a new era for pulsar astronomy, detecting gamma-ray pulsations from more than 60 pulsars, ~40% of which are not seen at radio wavelengths. One of the most interesting sources discovered by LAT is PSR J0357+3205, a radio-quiet, middle-aged (tau_C ~0.5 Myr) pulsar standing out for its very low spin-down luminosity (Erot ~6x10^33 erg/s), indeed the lowest among non-recycled gamma-ray pulsars. A deep X-ray observation with Chandra (0.5-10 keV), coupled with sensitive optical/infrared ground-based images of the field, allowed us to identify PSR J0357+3205 as a faint source with a soft spectrum, consistent with a purely non-thermal emission (photon index Gamma=2.53+/-0.25). The absorbing column (NH=8+/-4x10^20 cm^-2) is consistent with a distance of a few hundred parsecs. Moreover, the Chandra data unveiled a huge (9 arcmin long) extended feature apparently protruding from the pulsar. Its non-thermal X-ray spectrum points to synchrotron emission from energetic particles from the pulsar wind, possibly similar to other elongated X-ray tails associated with rotation-powered pulsars and explained as bow-shock pulsar wind nebulae (PWNe). However, energetic arguments, as well as the peculiar morphology of the diffuse feature associated with PSR J0357+3205 make the bow-shock PWN interpretation rather challenging.
description: 35 pages, 9 figures. Accepted for publication in ApJ
The difficult discussion on the deactivation of implantable cardioverter devices at the end of life: a systematic review
Creators: name: Murray, Siobhan C.
name: McNamara, Claire
name: CHATZI, ANNA
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Implantable cardioverter defibrillators (ICDs) reliably prevent death due to life-threatening arrhythmias; this may become less relevant in people with more severe heart failure who are reaching the end of life (EOL). This review aimed to explore the ICD deactivation process and identify ethical issues, especially around the initiation of relevant discussions among professionals and patients. Available literature was reviewed using four electronic databases to identify issues that may deter healthcare professionals from having important deactivation discussions and to address considerations for ICD management prior to the EOL. The search resulted in the retainment of 12 studies. Three themes emerged from the data: barriers and facilitators, ethical considerations in clinical practice, and nurse’s role. Lack of knowledge, which has been associated with cultural differences, has been found among the barriers, and interdisciplinary education and open communication appeared as facilitators. As clinicians’ ethical considerations and fears emerged from the literature, nurses’ special role has not been sufficiently supported. Complex care requires facilitation by multidisciplinary teams and education around the device’s function regarding EOL issues. Establishing expert consensus statements on advance care planning might help define the distinct roles of each healthcare practitioner involved. Further research is needed in addressing the identified gaps
Effet du génotype et de la teneur en sel sur la qualité des saucisses traditionnelles portugaises
Creators: name: LARANJO, Marta
name: POTES, Maria Eduarda
name: VÉSTIA, Joana
name: RODRIGUES, Sara
name: AGULHEIRO-SANTOS, Ana Cristina
name: CHARNECA, Rui
name: ELIAS, Miguel
Publisher: name: Zenodo
Year: 2019

description: The Portuguese swine breeds Alentejano (Al) and Bísaro (Bi) are traditionally bred in extensive systems. Al is a fat pig breed related to the Iberian pig breed, from the group of Mediterranean pigs, while Bi belongs to the group of Celtic pigs. In the framework of the European TREASURE project, traditional low-salt Portuguese meat products (2% NaCl) were produced in a local production unit using different genotypes of pigs: Al, Bi and hybrid genotypes BiAl and AlBi. The main objective of the work was to evaluate differences in product quality between genotypes, while trying to reduce the salt content without compromising the safety or acceptability of the products by consumers. Three independent batches were produced, and two sausages per batch were analysed. Quality of products was assessed by physico-chemical (pH, water activity, and lipid content), microbiological and sensory parameters. Significant differences in product composition were observed between genotypes. Products from Bi and BiAl pigs had a higher total lipid content (P < 0.001). Furthermore, pH was lower, while water activity (aW) was higher in low salt products (P < 0.05). The total content of biogenic amines was higher (P < 0.05) in Al products than in other products, mainly because of higher amounts of putrescine and cadaverine. The instrumental and sensory analyses show that reduction of the salt content did not decrease the quality or acceptability of the sausages.
Love kills: Simulations in Penna Ageing Model
Creators: name: Stauffer, D.
name: Cebrat, S.
name: Penna, T. J. P.
name: Sousa, A. O.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The standard Penna ageing model with sexual reproduction is enlarged by adding additional bit-strings for love: Marriage happens only if the male love strings are sufficiently different from the female ones. We simulate at what level of required difference the population dies out.
description: 14 pages, including numerous figures
Ground-state properties and superfluidity of two- and quasi two-dimensional solid 4He
Creators: name: Cazorla, C.
name: Astrakharchik, G. E.
name: Casulleras, J.
name: Boronat, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: In a recent study we have reported a new type of trial wave function symmetric under the exchange of particles and which is able to describe a supersolid phase. In this work, we use the diffusion Monte Carlo method and this model wave function to study the properties of solid 4He in two- and quasi two-dimensional geometries. In the purely two-dimensional case, we obtain results for the total ground-state energy and freezing and melting densities which are in good agreement with previous exact Monte Carlo calculations performed with a slightly different interatomic potential model. We calculate the value of the zero-temperature superfluid fraction ρ_{s} / ρof 2D solid 4He and find that it is negligible in all the considered cases, similarly to what is obtained in the perfect (free of defects) three-dimensional crystal using the same computational approach. Interestingly, by allowing the atoms to move locally in the perpendicular direction to the plane where they are confined to zero-point oscillations (quasi two-dimensional crystal) we observe the emergence of a finite superfluid density that coexists with the periodicity of the system.
description: 16 pages, 8 figures
ЭЛЕКТРОННАЯ ПЕРЕПИСКА КАК ДОКАЗАТЕЛЬСТВО В ГРАЖДАНСКОМ СУДОПРОИЗВОДСТВЕ
Creators: name: Журавлева Майя Дмитриевна
Publisher: name: Гуманитарные и политико-правовые исследования
Year: 2020
Subjects: гражданский процесс
гражданское судопроизводство
электронный документ
электронная переписка
доказательство
нотариус

description: В статье отмечается, что, учитывая современный уровень развития тех-ники, можно говорить об «электронных началах» гражданского процесса. Рас-сматриваются нормы закона, связанные с использованием электронного доку-мента в гражданском процессе, а также с надлежащим порядком его процессу-ального оформления. В числе письменных доказательств выделяется такое до-казательство, как документы, подписанные электронной подписью; однако кроме электронных документов с электронной подписью существуют электрон-ные письма и сообщения, не содержащие электронной подписи, которые чаще всего и используются в электронной переписке. Отмечается, что все доку-менты, полученные посредством электронной связи и представляемые в судо-производстве, делят на две группы: электронные документы и электронные со-общения. Особое значение имеет нарастающая актуальность применения элек-тронных переписок в социальных сетях и мессенджерах в качестве доказатель-ства в гражданском судопроизводстве. Выделяются субъекты заверения элек-тронных файлов: помимо главенствующей роли нотариусов, также электронная переписка может быть подтверждена и заверена провайдером интернет-услуг или услуг связи. Примечательно, чтобы суд принял переписку в качестве дока-зательства, она должна быть максимально содержательной, а, как правило, в мессенджерах используют сокращения, разговорный стиль, не всегда прямые значения слов. Отмечается, что суть сообщений может быть непонятна вне кон-текста, чего и стоит избегать в электронных переписках. На примерах из судеб-ной практики анализируются проблемы, связанные с правоприменением элек-тронных переписок, как доказательств. Подводится итог о том, что использова-ние электронных доказательств в гражданском процессе является перспектив-ным направлением развития института доказательств и доказывания.
Superperturbation theory on the real-axis
Creators: name: Jung, Christoph
name: Wilhelm, Aljoscha
name: Hafermann, Hartmut
name: Brener, Sergey
name: Lichtenstein, Alexander
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this article we formulate the superperturbation theory for the Anderson impurity model on the real axis. The resulting impurity solver allows to evaluate dynamical quantities without numerical analytical continuation by the maximum entropy method or Padé approximants. This makes the solver well suited to study multiplet effects in solids within the dynamical mean field theory. First examples including multi-orbital problems are discussed.
Essays in political economy
Creators: name: Cornwall, Thomas Hans Dillon
Publisher: name: University of British Columbia
Year: 2018

description: Chapter 1 estimates how an individual's expressed sentiment responds to messages from their social network connections. I use machine learning to code messages for expressions of one type of sentiment: happiness. Because network link formation is not random, I use exogenous shifters to instrument for the message volume of each of a user’s neighboring nodes. Specifically, I interact neighbor daylight with average neighbor sentiment, and aggregate this across neighbors to construct an instrument for viewed messages. A user with neighbors in different places with different average sentiment receives a shock to their feed when light levels differ across those places. I find that a user's happiness increases by 3.4% when the happiness of incoming messages increases by 10%. Chapter 2 presents a general framework for estimating the causal effect of social interactions on online social networks. This context presents two challenges for causal estimation beyond the endogeneity problem discussed above. First, social networks are dynamic: users are affected not only by contemporaneous messages but also by past messages. Second, some data is missing. These networks have relatively low levels of clustering, which means that it is computationally infeasible to collect all of the neighbors of a sample of the network. I introduce an estimation strategy for addressing these two challenges. I also construct six new instruments within this framework and compare their strength. Chapter 3 develops a method for estimating the impact of voter demobilization efforts on voter turnout. We exploit two facts: a) demobilization is typically targeted to avoid the supporters of the intended beneficiary, and b) voting results are available at the sub-district (poll) level. Omitted variables will generally be constant across a district, while the impact of the violations will be decreasing in the level of support for the violating party. Our method is general in the sense that it does not require a natural experiment and is robust to countrywide shifts in voter support (”swing”). We apply this method to allegations of fraud in the 2011 Canadian federal election, and estimate that illegal demobilization efforts reduced turnout by 3.9% in affected districts.
Poster Kelompok 6 KKN Patriot Mengabdi Tentang Poligami
Creators: name: Naftali, Gakur
Publisher: name: Zenodo
Year: 2022
Subjects: poster hukum

description: Poster ini merupakan luaran dari kelompok 6 KKN patriot mengabdi yang ditujukan bagi Desa Sambirejo, Jombang. anggota kelompok 6 KKN patriot mengabdi yaitu :
 1. Naftali Gakur (1311800252)
 2. Shintya Kurnia Beti Fardina (1311800095)
 3. Laily Indrianingsih (1311800161)
 4. Dwi Ajeng Ayu Pratiwi (1311800109)
 5. Mohammad Dipa Fahmi Lazuardi (1311700172) Dalam kegiatan KKN patriot mengabdi dan pembutan Poster ini juga dibantu oleh dosen pembimbing lapangan yaitu :
 Dr. Erny Herlin Setyorini, S.H., M.H. berikut adalah link akun Dosen Pembimbing Lapangan : https://zenodo.org/record/3628052#.YfThE-pBzIU
description: Poster Hukum Tentang Poligami
Davis Conklin House, Street View
Creators: name: Kelsey, Carleton
name: Amagansett Historical Association
Publisher: name: Unknown
Year: 0
Subjects: Photographs
Dwellings
Buildings
Structures
Conklin Family

description: This image shows a street view of the Davis Conklin House. This photograph was either taken or collected by Amagansett historian and librarian Carleton Kelsey.
description: This photograph is part of the collection of the Carleton Kelsey Collection of the Amagansett Historical Association. Kelsey was a local historian and librarian who collected photographs from others to add to the many photographs he took of the community himself.
Polarimetric Radar for Automotive Applications
Creators: name: Visentin, Tristan
Publisher: name: KIT Scientific Publishing
Year: 2019
Subjects: Polarimetrie
Automotive-Radar
Millimeterwellen-Radar
Objekterkennung
KI
Polarimetric Radar
Millimeter-Wave Radar
Machine-Learning
Automotive Radar
Target Classification

description: Current automotive radar sensors prove to be a weather robust and low-cost solution, but are suffering from low resolution and are not capable of classifying detected targets. However, for future applications like autonomous driving, such features are becoming ever increasingly important. On the basis of successful state-of-the-art applications, this work presents the first in-depth analysis and ground-breaking, novel results of polarimetric millimeter wave radars for automotive applications.
Emergence of states in the phonon spectral function of the Holstein polaron below and above the one-phonon continuum
Creators: name: Vidmar, Lev
name: Bonca, Janez
name: Trugman, Stuart A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate the low-energy properties of the Holstein polaron through calculation of the q-dependent phonon spectral function using an improved exact-diagonalization technique, defined over a variational Hilbert space. We perform a comprehensive study of the low-energy excitations of the polaron. Beside the energy range, where the additional phonon excitation is unbound, we observe separate coherent peaks which correspond to bound and antibound states of a polaron and additional phonon quanta. These novel states can be observed for intermediate and strong electron-phonon coupling strengths, as well as below and above the unbound one-phonon excitation spectrum. A detailed investigation of their properties is presented. We find good agreement between the phonon spectral function obtained from the first-order strong-coupling perturbation theory and numerical results.
description: 10 pages, 8 figures
The Polisario Front Security Threat Analysis
Creators: name: Nali, Jalal
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 440808
subject: International relations
classificationCode: 440217
subject: Terrorism
classificationCode: 500306
subject: Ethical theory

description: This article aims to analyse the Polisario Front's actions and classification within the context of international law, historical developments, and geopolitical interests. By examining documented incidents attributed to the Polisario Front, international legal frameworks, and the perspectives of various stakeholders, this analysis seeks to contribute to a more nuanced understanding of the complex factors that influence the categorisation of non-state armed groups in contested territories.By approaching this topic with academic rigour while acknowledging the evolving security imperatives of the region, this article seeks to move beyond outdated Cold War paradigms and contribute to a more contemporary understanding of the Polisario Front within the complex security landscape of North Africa and the Euro-Mediterranean region.This Paper is protected by licence CC BY 4.0: "As long as users give appropriate credit to the original creator; they are allowed to copy, distribute, remix, adapt, and build upon the work, even for commercial purposes."
ОРГАНИЗАЦИЯ ОПЕРАТИВНО-РОЗЫСКНОЙ ДЕЯТЕЛЬНОСТИ ПО ВЫЯВЛЕНИЮ И РАСКРЫТИЮ КОРРУПЦИОННЫХ ПРЕСТУПЛЕНИЙ ПРИ ИСПОЛНЕНИИ ГОСУДАРСТВЕННЫХ И МУНИЦИПАЛЬНЫХ КОНТРАКТОВ И ЗАКАЗОВ В СОЦИАЛЬНОЙ СФЕРЕ (НА ПРИМЕРЕ МВД ПО РЕСПУБЛИКЕ МОРДОВИЯ)
Creators: name: Исхаков Ильдар Наильевич
Publisher: name: Гуманитарные и политико-правовые исследования
Year: 2020
Subjects: уголовная ответственность
оперативно-розыскная деятельность
экономическая безопасность
противодействие коррупции
государственный контракт

description: Выявление и раскрытие экономических преступлений, совершаемых при расходовании бюджетных средств в социальной сфере, является одной из основных задач оперативно-розыскной деятельности подразделений ЭБиПК МВД РМ. Пристальное внимание к данной сфере вызвано не только значительным количеством совершаемых в ней преступлений, но и масштабами ущерба, причиняемого бюджетам различного уровня, исчисляемого сотнями миллиардов рублей. В статье анализируются на конкретных примерах результаты оперативно-розыскной деятельности подразделений ЭБиПК по выявлению, пресечению, документированию, раскрытию преступлений экономической и коррупционной направленности в сфере закупок товаров, работ, услуг для обеспечения государственных и муниципальных нужд. Опираясь на оперативно-следственно-судебную практику Республики Мордовия, в том числе на собственный опыт выявления, пресечения, раскрытия данных преступлений, автор описывает наиболее типичные преступные схемы. Автор делает вывод о том, что успешному выявлению и раскрытию данной категории преступлений способствует проведение полного комплекса и максимального количества ОРМ с использованием специальных технических служб, поисковых подразделений и информационных систем. Своевременное и качественное проведение ОРМ обеспечивает всестороннее документирование и формирование качественной доказательственной базы. В статье проанализированы проблемные вопросы, возникающие в процессе выявления и раскрытия преступлений в сфере закупок товаров, работ, услуг для обеспечения государственных и муниципальных нужд, разработаны предложения по совершенствованию деятельности оперативных и следственных подразделений, направления совершенствования с иными органами, организациями, гражданам в сфере выявления, пресечения и раскрытия данной группы преступлений.
Multi-Label Requirements Classification with Large Taxonomies
Creators: name: Abdeen, Waleed
name: Unterkalmsteiner, Michael
name: Wnuk, Krzysztof
name: Chirtoglou, Alexandros
name: Schimanski, Christoph
name: Goli, Heja
Publisher: name: arXiv
Year: 2024
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Classification aids software development activities by organizing requirements in classes for easier access and retrieval. The majority of requirements classification research has, so far, focused on binary or multi-class classification. Multi-label classification with large taxonomies could aid requirements traceability but is prohibitively costly with supervised training. Hence, we investigate zero-short learning to evaluate the feasibility of multi-label requirements classification with large taxonomies. We associated, together with domain experts from the industry, 129 requirements with 769 labels from taxonomies ranging between 250 and 1183 classes. Then, we conducted a controlled experiment to study the impact of the type of classifier, the hierarchy, and the structural characteristics of taxonomies on the classification performance. The results show that: (1) The sentence-based classifier had a significantly higher recall compared to the word-based classifier; however, the precision and F1-score did not improve significantly. (2) The hierarchical classification strategy did not always improve the performance of requirements classification. (3) The total and leaf nodes of the taxonomies have a strong negative correlation with the recall of the hierarchical sentence-based classifier. We investigate the problem of multi-label requirements classification with large taxonomies, illustrate a systematic process to create a ground truth involving industry participants, and provide an analysis of different classification pipelines using zero-shot learning.
description: Published by IEEE at the Requirements Engineering Conference (2024) - Industrial Innovation Track
НОРМОТВОРЧЕСКИЕ ТЕНДЕНЦИИ В РЕГУЛИРОВАНИИ ЭТНОКОНФЕССИОНАЛЬНЫХ ОТНОШЕНИЙ В РОССИЙСКОЙ ФЕДЕРАЦИИ
Creators: name: Коваль Екатерина Александровна
Publisher: name: Гуманитарные и политико-правовые исследования
Year: 2020
Subjects: нормотворчество
право
религия
мораль
этноконфессиональные отношения
конфликт
социальное воображаемое

description: В силу ряда причин процессы нациестроительства, формирования и развития этноконфессиональных отношений в Российской Федерации не исключают конфликтности, поэтому требуют жесткого нормативного урегулирования. При этом они регулируются не только правовыми инструментами, но и посредством таких социальных нормативных регуляторов, как религия, мораль, обычай, традиции, язык и др. Исследование динамики нормативного регулирования этноконфессиональных отношений позволило выявить ряд нормотворческих тенденций. Так, для нормативно-правового регулирования характерно появление норм, направленных на запрет политизации этноконфессиональных отношений; установление приоритета прав личности относительно прав группы в этноконфессиональных противоречиях; усиление юридической ответственности за нарушение норм, регулирующих этноконфессиональные отношения и др. Религиозное нормотворчество, рассмотренное на примере нормотворчества Русской Православной Церкви, характеризуется ориентацией на межнациональный и межрелигиозный диалог в целях разрешения общих социальных проблем, но исключающий богословские компромиссы; поиск баланса между правами личности и правами группы в ситуации этноконфесиональной напряженности; нормативное закрепление миротворческих обязательств Церкви в межнациональных конфликтах и др. Нормотворческие тенденции в морали отследить гораздо сложнее, поскольку они, как правило, не закрепляются в нормативных документах и не вербализуются открыто. Однако это не умаляет значимости исследования морального регулирования этноконфессиональных отношений. Для этого, в частности, может быть использован такой нормативный концепт, как «социальное воображаемое».
Dual Kappa Poincare Algebra
Creators: name: Magpantay, Jose A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show a different modification of Poincare algebra that also preserves Lorentz algebra. The change begins with how boosts affect spacetime in a way similar to how they affect the momenta in kappa Poincare algebra, hence the term "dual kappa Poincare algebra". Since by construction the new spacetime commutes, it follows that the momenta co-commute. Proposing a spacetime co-algebra that is similar to the coproduct in the bicrossproduct basis of kappa Poincare algebra, we derive the phase space algebra using the Heisenberg double construction. The phase space variables of the dual kappa Poincare algebra are then related to the SR phase space variables. From these relations, we complete the dual kappa Poincare algebra by deriving the action of rotations and boosts on the momenta.
description: 10 pages