cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum Stirling engine based on dinuclear metal complexes
Creators: name: Cruz, Clebson
name: Rastegar-Sedehi, Hamid-Reza
name: Anka, Maron F.
name: de Oliveira, Thiago R.
name: Reis, Mario
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Low-dimensional metal complexes are versatile materials with tunable physical and chemical properties that make these systems promising platforms for caloric applications. In this context, this work proposes a quantum Stirling cycle based on a dinuclear metal complex as a working substance. The results show that the quantum cycle operational modes can be managed when considering the change in the magnetic coupling of the material and the temperature of the reservoirs. Moreover, magnetic susceptibility can be used to characterize the heat exchanges of each cycle step and, therefore, its performance. As a proof of concept, the efficiency of the heat engine is obtained from experimental susceptibility data. These results open doors for studying quantum thermodynamic cycles by using metal complexes; and further the development of emerging quantum technologies based on these advanced materials.
title: ÐÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ Ð¿Ð¾Ð¶Ð°ÑÐ¾ÑÑÑÐµÐ½Ð¸Ñ Ð½Ð° ÑÐºÐ»Ð°Ð´Ðµ Ð·Ð¾Ð¾ÑÐ¾Ð²Ð°ÑÐ¾Ð²
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Organization offire extinguishing in the warehouse of pet goods
Creators: name: Ð Ð¾Ð·ÐµÐ½ÑÐµÐ»ÑÐ´, ÐÐ¸ÐºÐ¾Ð»Ð°Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð¿Ð¾Ð¶Ð°Ñ
ÑÐºÐ»Ð°Ð´ÑÐºÐ¸Ðµ Ð¿Ð¾Ð¼ÐµÑÐµÐ½Ð¸Ñ
ÐºÐ°ÑÐµÐ³Ð¾ÑÐ¸Ñ Ð¿Ð¾Ð¼ÐµÑÐµÐ½Ð¸Ð¹
Ð¾Ð³Ð½ÐµÑÑÐ¾Ð¹ÐºÐ¾ÑÑÑ
ÑÐ¸ÑÑÐµÐ¼Ñ Ð¿Ð¾Ð¶Ð°ÑÐ¾ÑÑÑÐµÐ½Ð¸Ñ
fire
warehouses
premises categories
fire resistance
fire extinguishing system

description: ÐÐ°ÑÑÐ¾ÑÑÐ°Ñ Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐ°ÐµÑÑÑ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð¿Ð¾Ð¶Ð°ÑÐ¾ÑÑÑÐµÐ½Ð¸Ñ Ð½Ð° ÑÐºÐ»Ð°Ð´Ðµ Ð·Ð¾Ð¾ÑÐ¾Ð²Ð°ÑÐ¾Ð². Ð Ð¿ÑÐ¾ÑÐµÑÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ» Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½ ÑÐºÐ»Ð°Ð´ ÐºÐ°Ðº Ð¾Ð±ÑÐµÐºÑ Ð¿Ð¾Ð¶Ð°ÑÐ½Ð¾Ð¹ Ð·Ð°ÑÐ¸ÑÑ. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ Ð¿Ð»Ð°Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÑÑÐµÐ½Ð¸Ñ Ð¿Ð¾Ð¶Ð°ÑÐ°.
description: This graduation qualification work of the bachelor is dedicated to the organization of fire extinguishing in the warehouse of pet goods. In the process of work, the warehouse was analyzed as an object of fire protection. An algorithm for firefighting planning is developed.
High Concentration Few-layer Graphene Sheets Obtained by Liquid Phase Exfoliation of Graphite in Ionic Liquid
Creators: name: Nuvoli, Daniele
name: Valentini, Luca
name: Alzari, Valeria
name: Scognamillo, Sergio
name: Bon, Silvia Bittolo
name: Piccinini, Massimo
name: Illescas, Javier
name: Mariani, Alberto
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: In the present work, the use of a commercial ionic liquid as a convenient solvent medium for graphite exfoliation in mild and easy conditions without any chemical modification is presented. To confirm the presence of few layer graphene, its dispersion was charachterized by Raman spectroscopy, atomic force miscroscopy and field emission electron microscopy. From the UV-Vis characterization, a graphene concentration as high as 2.543 mg/ml was obtained, which is the highest value reported so far in any solvent.
description: This paper has been withdrawn by the author due to a revision requested by the editor
Scalar and pseudoscalar Higgs production in association with a top-antitop pair
Creators: name: Frederix, Rikkert
name: Frixione, Stefano
name: Hirschi, Valentin
name: Maltoni, Fabio
name: Pittau, Roberto
name: Torrielli, Paolo
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the calculation of scalar and pseudoscalar Higgs production in association with a top-antitop pair to the next-to-leading order (NLO) accuracy in QCD, interfaced with parton showers according to the MC@NLO formalism. We apply our results to the cases of light and very light Higgs boson production at the LHC, giving results for total rates as well as for sample differential distributions, relevant to the Higgs, to the top quarks, and to their decay products. This work constitutes the first phenomenological application of aMC@NLO, a fully automated approach to complete event generation at NLO in QCD.
description: 15 pages, 8 figures, published version. (2 references added, improved description of the decay of the top and Higgs bosons)
title: Jejunal angiodysplasia: A rare case of gastrointestinal bleeding
Creators: name: Pires, Verena
Publisher: name: EURORAD
Year: 2021
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Gastrointestinal tract
subject: Small bowel
subject: CT
subject: Haemorrhage
subject: Clinical Cases

description: Clinical History: An 83-year-old man was presented to our emergency department with recurrent abdominal pain, weakness, and repeated melena for the past 3 weeks with no history of fever. Physical examination revealed no significant findings. At presentation, laboratory examination revealed marked anemia (hemoglobin was 6 g/dL; hematocrit 21,7%) with increased CRP (15,5 mg/L).

description: 83 years, male
Possible relationship between initial conditions for inflation and past geodesic incompleteness of the inflationary spacetime
Creators: name: Kaganovich, Alexander
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: According to the Borde-Guth-Vilenkin (BGV) theorem an expanding region of spacetime cannot be extended to the past beyond some boundary \mathcal{B}. Therefore, the inflationary universe must have had some kind of beginning. However, the BGW theorem says nothing about the boundary conditions on \mathcal{B}, or even about its location. Here we present a single-scalar field model of the Two-Measure Theory, where the non-Riemannian volume element $Υd^4x$ is present in the action. As a result of the model dynamics, an upper bound φ_0 of admissible values of the scalar field φappears, which sets the position of \mathcal{B} in the form of a spacelike hypersurface Υ(x)=0 with a boundary condition: Υ\to 0^+ as φ\toφ_0^-. A detailed study has established that if the initial kinetic energy density ρ_{kin}^{(in)} prevails over initial gradient energy density ρ_{grad}^{(in)} then there is an interval of initial values φ_{in}^{(min)}\leqφ_{in}<φ_0, where ρ_{kin}^{(in)} and ρ_{grad}^{(in)} cannot exceed the potential energy density and hence the initial conditions necessary for the onset of inflation are satisfied. It is shown that under almost all possible left-handed boundary conditions on \mathcal{B}, that is where Υ\to 0^-, the metric tensor in the Einstein frame has a jump discontinuity on \mathcal{B}, so the Christoffel connection coefficients are not defined on the spacelike hypersurface Υ=0. Thus, if φ_{in}^{(min)}\leq φ_{in}<φ_0 and ρ_{kin}^{(in)}>ρ_{grad}^{(in)}, then there was an inflationary stage in the history of our Universe and the congruence of timelike geodesics cannot be extended to the past beyond the hypersurface Υ=0.
description: 44 pages; 4 figures; fixed a few typos; to appear in JCAP
Prenylated bibenzyls from the Chinese liverwort Radula apiculata
Creators: name: Zhang, Chun-Yang
name: Zhou, Jin-Chuan
name: Lou, Hong-Xiang
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Inorganic Chemistry

description: Three new prenylated bibenzyls (1–3) and seven known congeners were purified from the Chinese liverwort Radula apiculata. Their structures were identified by the analysis of spectroscopic data and comparison of reported NMR data. All isolated compounds were tested for several human cancer cell lines with adriamycin served as a positive control.
INGLIZ VA O'ZBEK TILLARIDA SINONIM SO'ZLARINING QIYOSIY TAXLILI ASNOSIDA LUG'AVIY ZAXIRANI RIVOJLANTIRISH
Creators: name: Baltayeva, Nodira Timurqizi
Publisher: name: Academic research in educational sciences
Year: 2022
Subjects: ingliz tili
o’zbek tili
sinonimlar
qiyosiy taxlil
lug’aviy zahira
talaffuz.
English
Uzbek
synonyms
comparative analysis
dictionary replacement
pronunciation.

description: Ushbu maqola ingliz va o’zbek tillarida sinonim so’zlarining qiyosiy taxlili asnosida lug’aviy zaxirani rivojlantirish haqida, sinonimlar so`zning ma`noli shakllaridan biri bo`lib, talaffuzi, yozilishi har xil, birlashtiruvchi ma`nosi bir xil bo`lgan qo`shimcha ma`no nozikligi, emotsional ma`nosi qo`llanishi kabi bir qator xususiyatlari bilan o`zaro farqlanadigan so`zlardir. Hozirgi zamon ingliz tilida sinonimlarni nazariy va amaliy o`rganishda lingvistlar va o`qituvchilar oldiga qator vazifalarni yuklaydi. Bu esa ingliz tilini o`qitish, so`zlashuv aloqalarini yo`lga qo`yish jarayonini onsonlashtirishning ayrim tadbirlarini ko`rib chiqishni talab qiladi. Talabalar va o`quvchilarda ingliz tilida sinonimlarning ishlatilishi haqida tushuncha hosil qilishdan iborat.
description: This article is about the development of a dictionary reserve during a comparative analysis of synonym words in English and Uzbek languages, synonyms are words whose pronunciation, writing are different, the meaning of which is different from each other by a number of features, such as the subtleties of additional meanings, the application of emotional meaning, the meaning of which is identical. The present tense imposes a number of tasks on linguists and teachers in the theoretical and practical study of synonyms in English. And this requires the consideration of some measures of onsonalization of the process of teaching English, establishing colloquial relations. It consists in creating an understanding of the use of synonyms in English by students and students.
title: ÐÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ»ÐµÐºÑÑÐ¾ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²ÐµÐ½Ð½Ð¾-ÑÐºÐ»Ð°Ð´ÑÐºÐ¾Ð³Ð¾ ÐºÐ¾ÑÐ¿ÑÑÐ° Ð´ÐµÑÐµÐ²Ð¾Ð¾Ð±ÑÐ°Ð±Ð°ÑÑÐ²Ð°ÑÑÐµÐ³Ð¾ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Designing the power supply system of the production and warehouse building of a woodworking enterprise
Creators: name: ÐÑÐ°Ð½Ð°ÑÑÐµÐ², Ð Ð¾Ð¼Ð°Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÑÐ°ÑÑÐµÑÐ½ÑÐµ Ð½Ð°Ð³ÑÑÐ·ÐºÐ¸
ÑÐ»ÐµÐºÑÑÐ¾ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ðµ
ÑÐ¸Ð»Ð¾Ð²Ð¾Ð¹ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¾Ñ
ÐºÐ°Ð±ÐµÐ»ÑÐ½Ð°Ñ Ð»Ð¸Ð½Ð¸Ñ
ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð¾
ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ðµ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ðµ
design loads
power supply
power transformer
cable line
switchgear
short circuit

description: Ð Ð¿ÐµÑÐ²Ð¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ñ ÐºÑÐ°ÑÐºÐ°Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ° Ð¿Ð¾ÑÑÐµÐ±Ð¸ÑÐµÐ»ÐµÐ¹ Ð¸ Ð¸ÑÑÐ¾Ð´Ð½ÑÐµ Ð´Ð°Ð½Ð½ÑÐµ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð·Ð°Ð´Ð°ÑÐ¸ ÑÐ°Ð±Ð¾ÑÑ. ÐÐ¾ Ð²ÑÐ¾ÑÐ¾Ð¹ Ð³Ð»Ð°Ð²Ðµ Ð¿Ð¾Ð´ÑÐ¾Ð±Ð½Ð¾ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½ ÑÐ°ÑÑÐµÑ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð½Ð°Ð³ÑÑÐ·Ð¾Ðº Ð¿Ð¾ ÑÐ°Ð±Ð»Ð¸ÑÐ½ÑÐ¼ ÑÐ´ÐµÐ»ÑÐ½ÑÐ¼ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»ÑÐ¼, Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ Ð²ÑÐ±Ð¾Ñ ÑÐ¸ÑÐ»Ð°, Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸ Ð¸ ÑÐ¸Ð¿Ð° ÑÐ¸Ð»Ð¾Ð²ÑÑ Ð¼Ð°ÑÐ»ÑÐ½ÑÑ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¾ÑÐ¾Ð², ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ Ð²ÑÐ±Ð¾Ñ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð³Ð¾ ÑÐ»ÐµÐºÑÑÐ¾Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ. Ð ÑÑÐµÑÑÐµÐ¹ Ð³Ð»Ð°Ð²Ðµ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ ÑÐ°ÑÑÐµÑ ÑÐ¾ÐºÐ¾Ð² ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ, Ð²ÑÐ±ÑÐ°Ð½Ð¾ ÑÐ»ÐµÐºÑÑÐ¾Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð½Ð° ÑÑÐ¾ÑÐ¾Ð½Ðµ 10 ÐºÐ Ð¸ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ñ ÑÐ°ÑÑÐµÑ Ð¸ Ð²ÑÐ±Ð¾Ñ ÑÐµÐ»ÐµÐ¹Ð½Ð¾Ð¹ Ð·Ð°ÑÐ¸ÑÑ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¾ÑÐ°. Ð Ð·Ð°ÐºÐ»ÑÑÐµÐ½Ð¸Ð¸ Ð¿Ð¾Ð´Ð²ÐµÐ´ÐµÐ½Ñ Ð¸ÑÐ¾Ð³Ð¸ ÑÐ°Ð±Ð¾ÑÑ Ð¸ ÑÐ´ÐµÐ»Ð°Ð½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ Ð²ÑÐ²Ð¾Ð´Ñ.
description: The first chapter presents a brief description of consumers and initial data, as well as defines the main tasks of the work. In the second chapter, the calculation of electrical loads according to tabular specific indicators is considered in detail, the choice of the number, power and type of power oil transformers is made, as well as the choice of the main electrical equipment used in the design of the power supply system is made. In the third chapter, short-circuit currents are calculated, electrical equipment on the 10 kV side is selected, and the calculation and selection of the relay protection of the transformer is performed. In conclusion, the results of the work are summarized and the main conclusions are made.
Multipliers of locally compact quantum groups via Hilbert C$^*$-modules
Creators: name: Daws, Matthew
Publisher: name: arXiv
Year: 2010
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 43A22, 46L08, 46L89

description: A result of Gilbert shows that every completely bounded multiplier $f$ of the Fourier algebra $A(G)$ arises from a pair of bounded continuous maps $α,β:G \rightarrow K$, where $K$ is a Hilbert space, and $f(s^{-1}t) = (β(t)|α(s))$ for all $s,t\in G$. We recast this in terms of adjointable operators acting between certain Hilbert C$^*$-modules, and show that an analogous construction works for completely bounded left multipliers of a locally compact quantum group. We find various ways to deal with right multipliers: one of these involves looking at the opposite quantum group, and this leads to a proof that the (unbounded) antipode acts on the space of completely bounded multipliers, in a way which interacts naturally with our representation result. The dual of the universal quantum group (in the sense of Kustermans) can be identified with a subalgebra of the completely bounded multipliers, and we show how this fits into our framework. Finally, this motivates a certain way to deal with two-sided multipliers.
description: 24 pages; many typos corrected; some rewriting
Baryon asymmetry resulting from a quantum phase transition in the early universe
Creators: name: Shaginyan, V. R.
name: Japaridze, G. S.
name: Amusia, M. Ya.
name: Msezane, A. Z.
name: Popov, K. G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A novel mechanism for explaining the matter-antimatter asymmetry of the universe is considered. We assume that the universe starts from completely symmetric state and then, as it cools down, it undergoes a quantum-phase transition which in turn causes an asymmetry between matter and anti-matter. The mechanism does not require the baryon number violating interactions or CP violation at a microscopic level. Our analysis of the matter-antimatter asymmetry is in the context of conspicuous experimental results obtained in the condensed-matter physics.
description: 6 pages, 3 figures
Migratory Farm Workers in 1949
Creators: name: Ducoff, Louis J.
name: Ducoff, Louis J.
Publisher: name: Unknown
Year: 1950
Subjects: Consumer/Household Economics
Labor and Human Capital

description: Excerpts from the report Introduction: For the first time significant comparisons can now be made between migratory hired farm workers and other workers on farms in the United States. Phases that can be compared are the population characteristics, the employment, and the earnings at farm and nonfarm work. In a national cross-section survey of a sample of households visited in December 1949, information was obtained regarding those individuals in the household who were migratory farm workers during 1949. The collected information provides a picture of the current migratory farm working force and gives other types of information not previously available on a national basis. Because the information was obtained as part of a sample survey of individuals who did any farm-wage work in 1949, comparisons between migratory and nonmigratory farm workers are possible, and they are presented in this report.
Optimizing weak lensing mass estimates for cluster profile uncertainty
Creators: name: Gruen, Daniel
name: Bernstein, Gary M.
name: Lam, Tsz Yan
name: Seitz, Stella
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Weak lensing measurements of cluster masses are necessary for calibrating mass-observable relations (MORs) to investigate the growth of structure and the properties of dark energy. However, the measured cluster shear signal varies at fixed mass M_200m due to inherent ellipticity of background galaxies, intervening structures along the line of sight, and variations in the cluster structure due to scatter in concentrations, asphericity and substructure. We use N-body simulated halos to derive and evaluate a weak lensing circular aperture mass measurement M_ap that minimizes the mass estimate variance in the presence of all these forms of variability. Depending on halo mass and observational conditions, the resulting mass estimator improves on M_ap filters optimized for circular NFW-profile clusters in the presence of uncorrelated large scale structure (LSS) about as much as the latter improve on an estimator that only minimizes the influence of shape noise. Optimizing for uncorrelated LSS while ignoring the variation of internal cluster structure puts too much weight on the profile near the cores of halos, and under some circumstances can even be worse than not accounting for LSS at all. We briefly discuss the impact of variability in cluster structure and correlated structures on the design and performance of weak lensing surveys intended to calibrate cluster MORs.
description: 11 pages, 5 figures; accepted by MNRAS
Prompts to action : formative development of a text messaging intervention to support behavioural maintenance following a diabetes prevention program
Creators: name: MacPherson, Megan
Publisher: name: University of British Columbia
Year: 2022

description: Diet and exercise behaviour change remains a cornerstone of diabetes prevention; however, long-term adherence to such behaviours is low. Text messaging (‘texting’) is one of the widest reaching, most accessible technological interventions and may be a useful tool for improving adherence following behaviour change interventions. Although texting interventions have been shown to improve health behaviour change, current development reporting lacks quality, rigor, and often follows a “black box” model where information pertaining to message content creation and subsequent evaluation goes unreported. Using behaviour change theory and involving stakeholders throughout, this dissertation describes the development of a theory-based, user-informed texting intervention to improve diet and exercise adherence following the Small Steps for Big Changes (SSBC) type 2 diabetes (T2D) prevention program. SSBC empowers individuals to make diet and exercise changes to reduce their risk of T2D; the SSBC program was systematically developed through a rigorous process from pilot testing to an RCT and community implementation. Following the completion of the three-to-four-week intensive program phase, SSBC participants are asked to continue to implement strategies they learned in the program without any continued engagement from program providers; however, previous participants have expressed a desire for more support during this follow-up phase. The texting intervention detailed in this dissertation will be used to enhance support during the SSBC follow-up phase to improve diet and exercise behaviour-change adherence. Texting intervention development is situated within the preparation phase of the Multiphase Optimization Strategy (MOST). The MOST is a three-phase framework (Preparation; Optimization; Evaluation) which aims to develop interventions that are not only effective, but also efficient, economical, and scalable; all attributes which are key in developing interventions to be effectively translated into practice. The texting intervention development presented in this dissertation improves current understanding of what content and delivery components are suitable for implementation within the context of diabetes prevention. Grounded in the Preparation Phase of MOST, this dissertation lays the foundation for future optimization and efficacy research and can guide future mHealth developers in how to conduct formative research within the Preparation Phase of MOST.
NAVOIY POETIKASI
Creators: name: Xudayarova, Nigora Nuriddinovna
Publisher: name: Academic research in educational sciences
Year: 2022
Subjects: poetika
ijod
harakat
davr
ritm
iztirob
musofir

description: Alisher Navoiyning lirik merosi o’zbek lirikasining milliy hamda qardosh xalqlar adabiyotining eng ilg’or an’analarini o’zida mujassam etgan o`lmas va yuqori bosqichi hisobladi. Navoiy lirikasining tub mohiyati – falsafiy, ijtimoiy va yuksak poetik shakldagi ifodasi bo’lganligi bilan alohida ahamiyatga egadir. Biz birinchi marta Navoiy ijodiyotida lirikaning davrning yetakchi falsafiy-ijtimoiy oqimlari bilan bevosita aloqasini ko’ramiz. Lirikaning ijtimoiy muhit bilan munosabati, asosan, chuqur norozilikka asoslangan qarama-qarshiliklar, ilg’or bir mutafakkir – ijodkor isyoni sifatida ko’rinadi.
Perceptual Dimensions of Tone: Thai
Creators: name: Gandour, Jackson (Ed.)
Publisher: name: Pacific Linguistics
Year: 1979

description: PERCEPTUAL DIMENSIONS OF TONE: THAI. 277I. INTRODUCTION 277II. METHOD AND PROCEDURE 278A. Language 278B. Stimuli 280C. Subjects 282D. Experimental task 282E. Method of analysis 284III. RESULTS 285A. Interpretation of dimensions 285B. Subgroup differences in weights for dimensions 293IV. DISCUSSION AND CONCLUSIONS 295References 298
NEW PEDAGOGICAL TECHNOLOGIES IN TEACHING PROCESS
Creators: name: Shokhida Mirzaakhmadovna Sodikova
name: Fakhriddin Khusniddinov
name: Valikhanov, Nuriddin Komoliddin Ogli
Publisher: name: Academic research in educational sciences
Year: 2022
Subjects: The article discusses the educational and didactic possibilities of modern pedagogical technologies
the use of which is one of the prospective diactions of the development of higher education. The writer presents the algorithm and processually powerful acknowledgment of educational advances
which are most effectively utilized in the proficient planning of students
specifically: portfolio technology
project technology
technology of improvement of thinking and writing.

description: The article discusses the educational and didactic possibilities of modern pedagogical technologies, the use of which is one of the prospective diactions of the development of higher education. The writer presents the algorithm and processually powerful acknowledgment of educational advances, which are most effectively utilized in the proficient planning of students, specifically: portfolio technology, project technology, technology of improvement of thinking and writing.
title: Teaching Children About Social Justice Through Picture Books
Creators: name: Sorenson, Brooke C.
Publisher: name: Utah State University
Year: 2005

description: "Boys can't play with dolls!" "A girl can't be a doctor!" "Those people look weird!" "He's to dumb to play with us!" "My mommy says I can't play with you!" Unfortunately, phrases like this can be heard on a typical elementary school playground. As teachers, we have the difficult task of teaching about social justice and working to uproot prejudice and discrimination.
Equivariant pretheories and invariants of torsors
Creators: name: Gille, Stefan
name: Zainoulline, Kirill
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 20G15, 19L47, 14F43

description: In the present paper we introduce and study the notion of an equivariant pretheory: basic examples include equivariant Chow groups, equivariant K-theory and equivariant algebraic cobordism. To extend this set of examples we define an equivariant (co)homology theory with coefficients in a Rost cycle module and provide a version of Merkurjev's (equivariant K-theory) spectral sequence for such a theory. As an application we generalize the theorem of Karpenko-Merkurjev on G-torsors and rational cycles; to every G-torsor E and a G-equivariant pretheory we associate a graded ring which serves as an invariant of E. In the case of Chow groups this ring encodes the information concerning the motivic J-invariant of E and in the case of Grothendieck's K_0 -- indexes of the respective Tits algebras.
description: 23 pages; this is an essentially extended version of the previous preprint: the construction of an equivariant cycle (co)homology and the spectral sequence (generalizing the long exact localization sequence) are added
O’QITUVCHILARDA KREATIVLIKNI RIVOJLANTIRISH
Creators: name: G. O. Ernazarova
name: Q. T. Isroilov
Publisher: name: Academic research in educational sciences
Year: 2022
Subjects: bo`lg`usi tarix o'qituvchilarining kreativligi
evristik o'qitish usullari
kasbiy tayyorgarlik
kreativlik
ijodiy tafakkur
ijodiy fikrlash
ijodiy qobiliyat
ijodiy motivatsiya
ijodiy muhit
Creativity of future history teachers
heuristic teaching methods
professional training
creativity
creative thinking
creative motivation
creative environment.

description: Maqolada oliy ta'lim sharoitida bo`lajak o'qituvchilarida kreativlikni rivojlantirish xususiyatlari ko'rib chiqilgan.Talabalarning ijodiy salohiyatini shakllantirishning psixologik-pedagogik shartlari tavsiflanadi. Bo`lg`usi o`qituvchilarni kasbiy tayyorlash jarayonida evristik usullarni qo'llashning maqsadga muvofiqligi asoslangan va mashg`ulotlarni tashkil etishda qo`llanilishi tahlil qilingan
description: The article examines the features of the development of creativity of future history teachers in the context of higher education. The psychological and pedagogical conditions of formation creative potential of students. Heuristic methods of organizing classes are analyzed and the expediency of their application in the process of professional training of future teachers is substantiated.
Kasner cosmology in bumblebee gravity
Creators: name: Neves, Juliano C. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Kasner cosmology is a vacuum and anisotropically expanding spacetime in the general relativity context. In this work, such a cosmological model is studied in another context, the bumblebee model, where the Lorentz symmetry is spontaneously broken. By using the bumblebee context it is possible to justify the anisotropic feature of the Kasner cosmology. Thus, the origin of the anisotropy in this cosmological model could be in the Lorentz symmetry breaking. Lastly, an application in the pre-inflationary cosmology is suggested.
description: 7 pages. Published in Annals of Physics
Prepackaging Apples at Point of Production
Creators: name: Carlsen, Earl W.
name: Stokes, Donald R.
name: Carlsen, Earl W.
name: Stokes, Donald R.
Publisher: name: Unknown
Year: 1951
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Research and Development/Tech Change/Emerging Technologies

description: Excerpt from the report Summary: Research on prepackaging apples at the point of production, conducted in the Pacific Northwest, uncovered a number of ways of reducing costs of prepackaging through reduction in cost of materials, through development of new packaging techniques, and through demonstrating the savings that can be realized in merchandising prepackaged apples.
Towards a Reconstruction of the Pronominal Systems of Proto-Cordilleran, Philippines
Creators: name: Reid, Lawrence (Ed.)
Publisher: name: Pacific Linguistics
Year: 1979

description: TOWARDS A RECONSTRUCTION OF THE PRONOMINAL SYSTEMS OF PROTO-CORDILLERAN, PHILIPPINES. 259 1. INTRODUCTION 259 2. PRONOUN SETS 260 3. PC PRONOUNS: INTERNAL EVIDENCE 261 4. PC PRONOUNS: EXTERNAL AND PNC EVIDENCE 265 4.1 First person singular (1 s.) 265 4.2 Second person singular (2 s.) 266 4.3 Dual person (1+2 s.) 267 4.4 Third person singular (3 s.) 267 4.5 First person exclusive plural (1 p.) 268 4.6 Second person plural (2 p.) 268 4.7 First person inclusive plural (1+2 p.) 270 4.8 Third person plural (3 p.) 271 5. THE OBLIQUE PRONOUNS 271 6. CONCLUSION 271Notes 273Bibliography 274
title: ÐÐ¾Ð½ÑÐµÐ¿ÑÑÐ°Ð»ÑÐ½Ð°Ñ Ð¼ÐµÑÐ°ÑÐ¾ÑÐ° Ð² Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¸Ñ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐµÐºÑÑÐ°Ñ Ñ ÑÐ¾ÑÐºÐ¸ Ð·ÑÐµÐ½Ð¸Ñ Ð¼ÐµÐ¶ÐºÑÐ»ÑÑÑÑÐ½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
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Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÐºÐ¾Ð½ÑÐµÐ¿ÑÑÐ°Ð»ÑÐ½Ð°Ñ Ð¼ÐµÑÐ°ÑÐ¾ÑÐ°
Ð¼ÐµÐ¶ÐºÑÐ»ÑÑÑÑÐ½Ð°Ñ ÐºÐ¾Ð¼Ð¼ÑÐ½Ð¸ÐºÐ°ÑÐ¸Ñ
ÐºÐ¾Ð³Ð½Ð¸ÑÐ¸Ð²Ð½Ð°Ñ Ð»Ð¸Ð½Ð³Ð²Ð¸ÑÑÐ¸ÐºÐ°
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ÑÐ·ÑÐºÐ¾Ð²Ð°Ñ ÐºÑÐ»ÑÑÑÑÐ°

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ð° Ð¸ÑÑÐ¾ÑÐ¸Ñ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ Ð½Ð°ÑÑÐ½ÑÑ Ð²Ð·Ð³Ð»ÑÐ´Ð¾Ð² Ð½Ð° Ð¼ÐµÑÐ°ÑÐ¾ÑÑ, ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÑÐµÐ¾ÑÐ¸Ð¸, Ð¸Ð·ÑÑÐ°ÑÑÐ¸Ðµ Ð¼ÐµÑÐ°ÑÐ¾ÑÑ ÐºÐ°Ðº ÑÐ·ÑÐºÐ¾Ð²Ð¾Ð¹, Ð¼ÑÑÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÐ¹ Ð¼ÐµÑÐ°Ð½Ð¸Ð·Ð¼, Ð° ÑÐ°ÐºÐ¶Ðµ, ÐºÐ°Ðº ÑÐ°ÑÑÑ ÑÐ·ÑÐºÐ¾Ð²Ð¾Ð¹ ÐºÑÐ»ÑÑÑÑÑ. ÐÐ°Ð½Ð° ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ Ð¼ÐµÑÐ°ÑÐ¾Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¸Ð·ÑÑÐµÐ½Ð° ÑÐ¸ÑÑÐµÐ¼Ð° ÐºÐ¾Ð½ÑÐµÐ¿ÑÑÐ°Ð»ÑÐ½ÑÑ Ð¼ÐµÑÐ°ÑÐ¾Ñ, ÑÐ¾ÑÑÐ°Ð²Ð»ÑÑÑÐ¸Ñ Ð¾ÑÐ½Ð¾Ð²Ñ Ð¿Ð¾Ð½ÑÑÐ¸Ð¹Ð½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐµÐ»Ð¾Ð²ÐµÐºÐ°. ÐÑÐ¾Ð²ÐµÐ´ÑÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· Ð°Ð½Ð³Ð»Ð¸Ð¹ÑÐºÐ¸Ñ Ð¸ ÑÑÑÑÐºÐ¸Ñ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐµÐºÑÑÐ¾Ð² Ñ ÑÐµÐ»ÑÑ Ð²ÑÑÐ²Ð»ÐµÐ½Ð¸Ñ ÐºÐ¾Ð½ÑÐµÐ¿ÑÑÐ°Ð»ÑÐ½ÑÑ Ð¼ÐµÑÐ°ÑÐ¾Ñ, Ð¿Ð¾ÑÐ»Ðµ ÑÐµÐ³Ð¾ Ð´Ð°Ð½Ð° ÑÑÐ°Ð²Ð½Ð¸ÑÐµÐ»ÑÐ½Ð°Ñ Ð¼ÐµÐ¶ÐºÑÐ»ÑÑÑÑÐ½Ð°Ñ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ° ÑÐ¸ÑÑÐµÐ¼ Ð¼ÐµÑÐ°ÑÐ¾Ñ, ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð¸ÑÑÑÑÐ¸Ñ Ð² Ð´Ð°Ð½Ð½ÑÑ ÑÐµÐºÑÑÐ°Ñ.
description: This work outlines the history of the development of scientific views on metaphor, discusses theories that study metaphor as a linguistic mechanismand cognitive mechanism as well as a part of the linguistic culture. The work provides classification of metaphors and analyzes a system of conceptual metaphors that form the basis of a personâs conceptual system. The analysis of English and Russian economic texts was conducted in order to identify conceptual metaphors. Finally,the work presents theintercultural comparisonof the systems of metaphors functioning in English and Russian texts.
Chiral symmetry of graphene and strong coupling lattice gauge theory
Creators: name: Araki, Yasufumi
name: Hatsuda, Tetsuo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We model the electrons on a monolayer graphene in terms of the compact and non-compact U(1) lattice gauge theories. The system is analyzed by the strong coupling expansion and is shown to be an insulator due to dynamical gap formation in/around the strong coupling limit. This is similar to the spontaneous chiral symmetry breaking in strong coupling gauge theories. The results from the compact and non-compact formulations are compared up to the next-to-leading order of the strong coupling expansion. Excitonic modes and their dispersion relations in the insulating phase are also investigated: it is found that there arises a pseudo-Nambu--Goldstone mode obeying the Gell-Mann--Oakes--Renner type formula.
description: 7 pages, 2 figures; presented at 28th International Symposium on Lattice Field Theory, Lattice2010, June 14-19, 2010, Villasimius, Italy
title: The Fate of Iron Released from Heme by Hemeoxygenase-1
Creators: name: Gardner, Jonathan Mark
Publisher: name: Utah State University
Year: 2006

description: A strain of Escherichia coli was genetically modified to co-express human heme oxygenase-1 and ferritin. The E. coli were then grown with varying amounts of hemin to see if the iron released upon degradation of the hemin by heme oxygenase-1 is loaded into ferritin. Following incubation, the ferritin was purified and the amount of iron loaded into ferritin determined. It was found that ferritin purifed from E. coli expressing human heme oxygenase-1 contained more iron than E. coli that did not contain human heme oxygenase-1. It was concluded that some of the iron released upon degradation of hemin by heme oxygenase-1 can be sequestered by ferritin.
Spectral function of the $J_1-J_2$ Heisenberg model on the triangular lattice
Creators: name: Sherman, Nicholas E.
name: Dupont, Maxime
name: Moore, Joel E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Spectral probes, such as neutron scattering, are crucial for characterizing excitations in quantum many-body systems and the properties of quantum materials. Among the most elusive phases of matter are quantum spin liquids, which have no long-range order even at zero temperature and host exotic fractionalized excitations with non-trivial statistics. These phases can occur in frustrated quantum magnets, such as the paradigmatic Heisenberg model with nearest and next-nearest neighbor exchange interactions on the triangular lattice, the so-called $J_1-J_2$ model. In this work, we compute the spectral function using large scale matrix product state simulations across the three different phases of this model's phase diagram, including a quantum spin liquid phase at intermediate $J_2/J_1$. Despite a plethora of theoretical and experimental studies, the exact nature of this phase is still contested, with the dominant candidates being a gapped $\mathbb{Z}_2$, a gapless $U(1)$ Dirac, and a spinon Fermi surface quantum spin liquid state. We find a V-shaped spectrum near the center of the Brillouin zone ($Γ$ point), a key signature of a spinon Fermi surface, observed in prior neutron scattering experiments. However, we find a small gap near the $Γ$ point, ruling out such a phase. Furthermore, we find localized gapless excitations at the corner of the Brillouin zone boundary (K point) and the middle of the edge of the Brillouin zone boundary (M point), ruling out the gapped $\mathbb{Z}_2$ spin liquid phase. Our results imply that the intermediate spin liquid phase is a gapless $U(1)$ Dirac spin liquid, and provide clear signatures to detect this phase in future neutron scattering experiments.
description: 18 pages (8 figures)
title: Personal Restoration Garden Design: In Search of Balance
Creators: name: Burger, Don
Publisher: name: Utah State University
Year: 2006

description: Life in today's society dictates that all of us need healing from time to time. Maladies and illnesses take ever higher tolls on our bodies, while work and life-related stress tax our willpower, mental health, and even our souls. The incidence of stress-related illness and fatigue is reaching almost epidemic proportions. The National Institute on Mental Health estimates that one in four Americans is affected by mental illness of some sort. That equates to over 57 million people in the United States alone (NIMH 2006).
Neural Network Approach to Scaling Analysis of Critical Phenomena
Creators: name: Yoneda, Ryosuke
name: Harada, Kenji
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Determining the universality class of a system exhibiting critical phenomena is one of the central problems in physics. There are several methods to determine this universality class from data. As methods performing collapse plots onto scaling functions, polynomial regression, which is less accurate, and Gaussian process regression, which provides high accuracy and flexibility but is computationally heavy, have been proposed. In this paper, we propose a regression method using a neural network. The computational complexity is only linear in the number of data points. We demonstrate the proposed method for the finite-size scaling analysis of critical phenomena on the two-dimensional Ising model and bond percolation problem to confirm the performance. This method efficiently obtains the critical values with accuracy in both cases.
description: 10 pages, 10 figures, code implementation is available at https://github.com/yonesuke/jaxfss and https://github.com/KenjiHarada/FSS-tools
New diagrammatic framework for higher-spin gravity
Creators: name: Neiman, Yasha
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider minimal type-A higher-spin (HS) gravity in four dimensions, at tree level. We propose new diagrammatic rules for this theory, involving both Fronsdal fields and Didenko-Vasiliev (DV) particles - linearized versions of HS gravity's "BPS black hole". The vertices include a standard minimal coupling between particle and gauge field, the Sleight-Taronna cubic vertex for HS fields, and a recently introduced vertex coupling two HS fields to a DV particle. We show how these ingredients can be combined to reproduce all n-point functions of the theory's holographic dual - the free O(N) vector model. Our diagrammatic rules interpolate between the usual ones of field theory and those of string theory. Our construction can be viewed as a bulk realization of HS algebra.
description: 5 pages + 15 pages of appendices, 1 figure + 31 diagrams; v2: PRL version - expanded exposition and examples, corrected some combinatorics
Compression Optimality of Asymmetric Numeral Systems
Creators: name: Pieprzyk, Josef
name: Duda, Jarek
name: Pawlowski, Marcin
name: Camtepe, Seyit
name: Mahboubi, Arash
name: Morawiecki, Pawel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Compression also known as entropy coding has a rich and long history. However, a recent explosion of multimedia Internet applications (such as teleconferencing and video streaming for instance) renews an interest in fast compression that also squeezes out as much redundancy as possible. In 2009 Jarek Duda invented his asymmetric numeral system (ANS). Apart from a beautiful mathematical structure, it is very efficient and offers compression with a very low residual redundancy. ANS works well for any symbol source statistics. Besides, ANS has become a preferred compression algorithm in the IT industry. However, designing ANS instance requires a random selection of its symbol spread function. Consequently, each ANS instance offers compression with a slightly different compression rate. The paper investigates compression optimality of ANS. It shows that ANS is optimal (i.e. the entropies of encoding and source are equal) for any symbol sources whose probability distribution is described by natural powers of 1/2. We use Markov chains to calculate ANS state probabilities. This allows us to determine ANS compression rate precisely. We present two algorithms for finding ANS instances with high compression rates. The first explores state probability approximations in order to choose ANS instances with better compression rates. The second algorithm is a probabilistic one. It finds ANS instances, whose compression rate can be made as close to the best rate as required. This is done at the expense of the number $θ$ of internal random ``coin'' tosses. The algorithm complexity is ${\cal O}(θL^3)$, where $L$ is the number of ANS states. The complexity can be reduced to ${\cal O}(θL\log{L})$ if we use a fast matrix inversion. If the algorithm is implemented on quantum computer, its complexity becomes ${\cal O}(θ(\log{L})^3)$.
Quark-Novae in Low-Mass X-ray Binaries with massive neutron stars: A universal model for short-hard Gamma-Ray Bursts
Creators: name: Ouyed, Rachid
name: Staff, Jan E.
name: Jaikumar, Prashanth
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that several features reminiscent of short-hard Gamma-ray Bursts (GRBs) arise naturally when Quark-Novae occur in low-mass X-ray binaries born with massive neutron stars (> 1.6M_sun) and harboring a circumbinary disk. Near the end of the first accretion phase, conditions are just right for the explosive conversion of the neutron star to a quark star (Quark-Nova). In our model, the subsequent interaction of material from the neutron star's ejected crust with the circumbinary disk explains the duration, variability and near-universal nature of the prompt emission in short-hard GRBs. We also describe a statistical approach to ejecta break-up and collision to obtain the photon spectrum in our model, which turns out remarkably similar to the empirical Band function (Band 1993). We apply the model to the fluence and spectrum of GRB 000727, GRB 000218, and GRB980706A obtaining excellent fits. Extended emission (spectrum and duration) is explained by shock-heating and ablation of the white dwarf by the highly energetic ejecta. Depending on the orbital separation when the Quark-Nova occurs, we isolate interesting regimes within our model when both prompt and extended emission can occur. We find that the spectrum can carry signatures typical of Type Ib/c SNe although these should appear less luminous than normal type Ib/c SNe. Late X-ray activity is due to accretion onto the quark star as well as its spin-down luminosity. Afterglow activity arise from the expanding shell of material from the shock-heated expanding circumbinary disk. We find a correlation between the duration and spectrum of short-hard GRBs as well as modest hard-to-soft time evolution of the peak energy.
description: 13 journal pages, 4 figures and 1 Table -- ApJ in Press (New title and extended discussions in the revised text)
A Riemann Hilbert approach to the study of the generating function associated to the Pearcey process
Creators: name: Chouteau, Thomas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Using Riemann-Hilbert methods, we establish a Tracy-Widom like formula for the generating function of the occupancy numbers of the Pearcey process. This formula is linked to a coupled vector differential equation of order three. We also obtain a non linear coupled heat equation. Combining these two equations we obtain a PDE for the logarithm of the the generating function of the Pearcey process.
description: 18 pages, 3 figures
Relieving the Wireless Infrastructure: When Opportunistic Networks Meet Guaranteed Delays
Creators: name: Whitbeck, John
name: Lopez, Yoann
name: Leguay, Jérémie
name: Conan, Vania
name: de Amorim, Marcelo Dias
Publisher: name: arXiv
Year: 2010
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Major wireless operators are nowadays facing network capacity issues in striving to meet the growing demands of mobile users. At the same time, 3G-enabled devices increasingly benefit from ad hoc radio connectivity (e.g., Wi-Fi). In this context of hybrid connectivity, we propose Push-and-track, a content dissemination framework that harnesses ad hoc communication opportunities to minimize the load on the wireless infrastructure while guaranteeing tight delivery delays. It achieves this through a control loop that collects user-sent acknowledgements to determine if new copies need to be reinjected into the network through the 3G interface. Push-and-Track includes multiple strategies to determine how many copies of the content should be injected, when, and to whom. The short delay-tolerance of common content, such as news or road traffic updates, make them suitable for such a system. Based on a realistic large-scale vehicular dataset from the city of Bologna composed of more than 10,000 vehicles, we demonstrate that Push-and-Track consistently meets its delivery objectives while reducing the use of the 3G network by over 90%.
description: Accepted at IEEE WoWMoM 2011 conference
The Rüchardt experiment revisited: using simple theory, accurate measurement and python based data analysis
Creators: name: Shearwood, Chris
name: Sloan, Peter A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: This project uses the Rüchardt experiment to determine the ratio of specific heats and hence the number of degrees of freedom $f$ of different gases by measuring the frequency of damped simple harmonic motion where the gas provides the Hooke's law like spring of a cylinder-piston system. This project links mechanics, electromagnetism, thermodynamics, statistical mechanics and quantum mechanics making it an excellent synoptic experiment for a mid year undergraduate student. We present simple derivations of the main relationships that govern the experiment, a detailed data analysis of the physics of the apparatus and of the experimental data. We find $f(\textrm{He}) = 3.48 \pm 0.14$, $f(\textrm{N}_2) = 4.92 \pm 0.24$, $f(\textrm{Air}) = 4.96 \pm 0.25$, $f(\textrm{CO}_2) = 6.46 \pm 0.39$ at room temperature and atmospheric pressure. The results for CO$_2$ requires a statistical analysis of its vibrational modes. These results show that the expected results can be measured using fairly simple apparatus, coupled with careful analysis of large data sets.
description: 24 pages, 8 figures
A low frequency study of PSRs B1133+16, B1112+50, and B0031-07
Creators: name: Karuppusamy, Ramesh
name: Stappers, Ben
name: Serylak, Maciej
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The low frequency (110--180 MHz) capabilities of the Westerbork Synthesis Radio Telescope (WSRT) are used to characterise a large collection of single pulses from three low magnetic field pulsars. Using the Pulsar Machine II (PuMa-II) to acquire and coherently dedisperse the pulsar signals, we examine whether the bright pulses observed in these pulsars are related to the classical giant pulse emission. Giant pulses are reported from PSR B1112$+$50 and bright pulses from the PSRs B1133$+$16 and B0031$-$07. These pulsars also exhibit large intensity modulations observed as rapid changes in the single pulse intensity. Evidence of global magnetospheric effects is provided by our detection of bright double pulses in PSRs B0031$-$07 and B1133$+$16. Using the multi-frequency observations, we accurately determine the dispersion measures (4.844$\pm$0.002 for B1133$+$16 and 9.1750$\pm$0.0001 for B1112$+$50), derive the radio emission height in PSR B1133$+$16 and report on the properties of subpulse drift modes in these pulsars. We also find that these pulsars show a much larger intensity modulation at low sky frequencies resulting in narrow and bright emissions.
description: 13 pages, 8 figures, accepted for publication by A&A