cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Systematic {\it ab initio} study of the magnetic and electronic properties of all 3d transition metal linear and zigzag nanowires
Creators: name: Tung, J. C.
name: Guo, G. Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: It is found that all the zigzag chains except the nonmagnetic (NM) Ni and antiferromagnetic (AF) Fe chains which form a twisted two-legger ladder, look like a corner-sharing triangle ribbon, and have a lower total energy than the corresponding linear chains. All the 3d transition metals in both linear and zigzag structures have a stable or metastable ferromagnetic (FM) state. The electronic spin-polarization at the Fermi level in the FM Sc, V, Mn, Fe, Co and Ni linear chains is close to 90% or above. In the zigzag structure, the AF state is more stable than the FM state only in the Cr chain. It is found that the shape anisotropy energy may be comparable to the electronic one and always prefers the axial magnetization in both the linear and zigzag structures. In the zigzag chains, there is also a pronounced shape anisotropy in the plane perpendicular to the chain axis. Remarkably, the axial magnetic anisotropy in the FM Ni linear chain is gigantic, being ~12 meV/atom. Interestingly, there is a spin-reorientation transition in the FM Fe and Co linear chains when the chains are compressed or elongated. Large orbital magnetic moment is found in the FM Fe, Co and Ni linear chains.
On the non-existence of stepped-pressure equilibria far from symmetry
Creators: name: Qu, Z. S.
name: Hudson, S. R.
name: Dewar, R. L.
name: Loizu, J.
name: Hole, M. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The Stepped Pressure Equilibrium Code (SPEC) [Hudson et al., Phys. Plasmas 19, 112502 (2012)] has been successful in the construction of equilibria in 3D configurations that contain a mixture of flux surfaces, islands and chaotic magnetic field lines. In this model, the plasma is sliced into sub-volumes separated by ideal interfaces, and in each volume the magnetic field is a Beltrami field. In the cases where the system is far from possessing a continuous symmetry, such as in stellarators, the existence of solutions to a stepped-pressure equilibrium with given constraints, such as a multi-region relaxed MHD minimum energy state, is not guaranteed but is often taken for granted. Using SPEC, we have studied two different scenarios in which a solution fails to exist in a slab with analytic boundary perturbations. We found that with a large boundary perturbation, a certain interface becomes fractal, corresponding to the break up of a Kolmogorov-Arnold-Moser (KAM) surface. Moreover, an interface can only support a maximum pressure jump while a solution of the magnetic field consistent with the force balance condition can be found. An interface closer to break-up can support a smaller pressure jump. We discovered that the pressure jump can push the interface closer to being non-smooth through force balance, thus significantly decreasing the maximum pressure it can support. Our work shows that a convergence study must be performed on a SPEC equilibrium with interfaces close to break-up. These results may also provide insights into the choice of interfaces and have applications in finding out the maximum pressure a machine can support.
YERNI MASOFADAN ZONDLASH TEXNOLOGIYALARIDAN FOYDALANIB YASHIL HUDUD MONITORINGINI OLIB BORISH
Creators: name: Raximov, Bobomurod
Publisher: name: Zenodo
Year: 2023

description: Hozirgi vaqtda yerni masofadan zondlash masalasi tobora ommalashib bormoqda. Sun’iy yo‘ldoshlardan olingan ma’lumotlar tufayli biz ma’lum hududlarda seysmiklik to‘g'risida aniq ma’lumotlarni yangilashimiz va olishimiz, favqulodda vaziyatlarning ko‘lamini, atrof-muhit ifloslanishining ko‘lamini kuzatishimiz mumkin, shuningdek, atrof-muhitning ifloslanishini kuzatish imkoniyati, sayyorada sodir bo‘layotgan iqlim o‘zgarishlari mavjud.
Effects of stickiness in the classical and quantum ergodic lemon billiard
Creators: name: Lozej, Črt
name: Lukman, Dragan
name: Robnik, Marko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the classical and quantum ergodic lemon billiard introduced by Heller and Tomsovic in Phys. Today 46(7), 38 (1993), for the case $B=1/2$, which is a classically ergodic system (without a rigorous proof) exhibiting strong stickiness regions around a zero-measure bouncing ball modes. The structure of the classical stickiness regions is uncovered in the S-plots introduced by Lozej [Phys. Rev. E 101, 052204 (2020)]. A unique classical transport or diffusion time cannot be defined. As a consequence the quantum states are characterized by the following nonuniversal properties: (i) All eigenstates are chaotic but localized as exhibited in the Poincaré-Husimi (PH) functions. (ii) The entropy localization measure A (also the normalized inverse participation ratio) has a nonuniversal distribution, typically bimodal, thus deviating from the beta distribution, the latter one being characteristic of uniformly chaotic systems with no stickiness regions. (iii) The energy-level spacing distribution is Berry-Robnik-Brody (BRB), capturing two effects: the quantally divided phase space (because most of the PH functions are either the inner-ones or the outer-ones, dictated by the classical stickiness, with an effective parameter $μ_1$ measuring the size of the inner region bordered by the sticky invariant object, namely, a cantorus), and the localization of PH functions characterized by the level repulsion (Brody) parameter $β$. (iv) In the energy range considered (between 20 000 states to 400 000 states above the ground state) the picture (the structure of the eigenstates and the statistics of the energy spectra) is not changing qualitatively, as $β$ fluctuates around 0.8, while $μ_1$ decreases almost monotonically, with increasing energy.
description: 13 pages, 10 figures
Quantum electrodynamics and photon-assisted tunnelling in long Josephson junctions
Creators: name: Sboychakov, A. O.
name: Savel'ev, Sergey
name: Nori, Franco
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We describe the interaction between an electromagnetic field and a long Josephson junction (JJ) driven by a dc current. We calculate the amplitudes of emission and absorption of light via the creation and annihilation of quantized Josephson plasma waves (JPWs). Both, the energies of JPW quanta and the amplitudes of light absorption and emission, strongly depend on the junction's length and can be tuned by an applied dc current. Moreover, photon-assisted macroscopic quantum tunnelling in long Josephson junctions show resonances when the frequency of the outside radiation coincides with the current-driven eigenfrequencies of the quantized JPWs.
description: 9 pages, 4 figures
Effect of viscous shearing stresses on optimal material designs for flow of fluids through porous media
Creators: name: Phatak, T.
name: Nakshatrala, K. B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Topology optimization offers optimal material layouts, enabling automation in the design of devices. Given the recent advances in computer technology and additive manufacturing, topology optimization is increasingly being used to design complex porous structures, for example, microfluidic devices. For the flow of fluids in such miniature-sized porous structures, viscous shearing stress will be significant. But the Darcy model -- the most popular mathematical model describing the flow of a single-phase incompressible fluid in rigid porous media -- neglects the internal friction arising from viscous shearing stress. We will therefore develop a material design framework under the topology optimization based on the Darcy-Brinkman model -- a mathematical model for the flow of fluids through porous media that accounts for internal friction besides the drag considered in the Darcy model. The proposed framework uses the total rate of mechanical dissipation -- a physical quantity -- for the objective function. To understand the effect of viscous shearing stress on the design, we will compare the optimal material layouts provided by the Darcy and Darcy-Brinkman models under topology optimization. In particular, we show, using analytical solutions corroborated by numerical simulations, that the optimal material layouts are identical for the class of problems exhibiting axisymmetry, for which viscous shearing stress vanishes. These analytical solutions will be valuable to check the veracity of numerical simulators. For those problems with dominant viscous shearing stresses (e.g., flow in a backward-facing step domain), we show, using numerical solutions, that the optimal material layouts under the Darcy and Darcy-Brinkman models are very different. Also, the associated solution fields (i.e., velocity and pressure) are qualitatively different under their respective optimal layouts for these two models.
Efficient Quasi-Geodesics on the Stiefel Manifold
Creators: name: Bendokat, Thomas
name: Zimmermann, Ralf
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Solving the so-called geodesic endpoint problem, i.e., finding a geodesic that connects two given points on a manifold, is at the basis of virtually all data processing operations, including averaging, clustering, interpolation and optimization. On the Stiefel manifold of orthonormal frames, this problem is computationally involved. A remedy is to use quasi-geodesics as a replacement for the Riemannian geodesics. Quasi-geodesics feature constant speed and covariant acceleration with constant (but possibly non-zero) norm. For a well-known type of quasi-geodesics, we derive a new representation that is suited for large-scale computations. Moreover, we introduce a new kind of quasi-geodesics that turns out to be much closer to the Riemannian geodesics.
description: 8 pages, 1 figure, conference GSI2021
Bayesian I-optimal designs for choice experiments with mixtures
Creators: name: Becerra, Mario
name: Goos, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Discrete choice experiments are frequently used to quantify consumer preferences by having respondents choose between different alternatives. Choice experiments involving mixtures of ingredients have been largely overlooked in the literature, even though many products and services can be described as mixtures of ingredients. As a consequence, little research has been done on the optimal design of choice experiments involving mixtures. The only existing research has focused on D-optimal designs, which means that an estimation-based approach was adopted. However, in experiments with mixtures, it is crucial to obtain models that yield precise predictions for any combination of ingredient proportions. This is because the goal of mixture experiments generally is to find the mixture that optimizes the respondents' utility. As a result, the I-optimality criterion is more suitable for designing choice experiments with mixtures than the D-optimality criterion because the I-optimality criterion focuses on getting precise predictions with the estimated statistical model. In this paper, we study Bayesian I-optimal designs, compare them with their Bayesian D-optimal counterparts, and show that the former designs perform substantially better than the latter in terms of the variance of the predicted utility.
description: 19 pages, 7 figures, to be published in Chemometrics and Intelligent Laboratory Systems
Identity at the Intersection of Gender and Religion Interview Supplement
Creators: name: Sufian, Sandra
name: Sandahl, Carrie
name: Michel, Joanna
name: Vazquez-Melendez, Elsa
name: Case, Gretchen
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: Ethnic Studies
subject: 130205 Humanities and Social Sciences Curriculum and Pedagogy (excl. Economics, Business and Management)
subject: FOS: Educational sciences
subject: 190404 Drama, Theatre and Performance Studies
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: Gender studies
subject: 220405 Religion and Society
subject: FOS: Philosophy, ethics and religion

description: This Health Humanities Portrait--Identity at the Intersection of Gender and Religion among Mexican-American Women in Chicago-- explores how individuals are expected to navigate a variety of social roles—such as their gender, age, and vocation--in their everyday lives. This Health Humanities portrait uses a “dramaturgical analysis,” derived from performance studies, to explore how social roles influence our understandings and experiences of health, well-being, and illness.
Aging, End of Life and Narrative Ethics Power Point Presentation
Creators: name: Sufian, Sandra
name: Kirschner, Kristi
name: Gramelspacher, Anna Maria
name: Laetham, Erica
name: Halpern, Jodi
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: 220101 Bioethics (human and animal)
subject: FOS: Philosophy, ethics and religion
subject: 220106 Medical Ethics
subject: FOS: Health sciences
subject: 110308 Geriatrics and Gerontology
subject: FOS: Clinical medicine
subject: 130205 Humanities and Social Sciences Curriculum and Pedagogy (excl. Economics, Business and Management)
subject: FOS: Educational sciences

description: This Health Humanities Portrait-- Aging, End of Life and Narrative Ethics-- uses a narrative ethics framework to explore social and systemic realities that influence care of people as they age and as they face the end of life. It highlights the patient’s voice and organizes patient values and preferences on the matter of aging and end of life. The HHP helps learners appreciate the social, systemic, economic, racial/ethnic, geographic, relational, and developmental stages of a patient’s life that influence care in older age and at the end of life. The portrait applies the virtue of narrative humility to the material so learners recognize the limits of our own knowledge and our inability to completely understand another’s experience. It employs close reading to cultivate empathic curiosity and guard against projection in interpreting a patient’s preferences, values, unmet needs, and experiences of aging and of end of life.
The Dense Warm Ionized Medium in the Inner Galaxy
Creators: name: Langer, W. D.
name: Pineda, J. L.
name: Goldsmith, P. F.
name: Chambers, E. T.
name: Riquelme, D.
name: Anderson, L. D.
name: Luisi, M.
name: Justen, M.
name: Buchbender, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Ionized interstellar gas is an important component of the interstellar medium and its lifecycle. The recent evidence for a widely distributed highly ionized warm interstellar gas with a density intermediate between the warm ionized medium (WIM) and compact HII regions suggests that there is a major gap in our understanding of the interstellar gas. Here we investigate the properties of the dense warm ionized medium (D-WIM) in the Milky Way using spectrally resolved SOFIA GREAT [NII] 205 micron line emission and Green Bank Telescope hydrogen radio recombination lines (RRL) data, supplemented by Herschel PACS [NII] 122 micron data, and spectrally resolved 12CO. We observed eight lines of sight in the 20deg 50% of the observed [CII] intensity along these LOS. The kinetic temperatures we derive are too low to explain the presence of N+ resulting from electron collisional ionization and/or proton charge transfer of atomic nitrogen. Rather, these regions most likely are ionized by extreme ultraviolet radiation.
description: 16 pages, 10 figures
Thin sets and strict-two-associatedness
Creators: name: Hare, Kathryn Elizabeth
Publisher: name: University of British Columbia
Year: 2010

description: Let G be a compact, abelian group and let E be a subset of its discrete, abelian, dual group Ĝ. E is said to be a ∧(p) set if for some r < p there is a constant c(r) so that ‖ƒ‖ [sub p] ≤ c(r) ‖ƒ‖ [sub r] whenever the support of ƒ, the Fourier transform of ƒ, is a finite subset of E. The main result of this thesis, Theorem 3.5, is that if E is a ∧(p) set, p > 2, and E satisfies a necessary technical condition, then for each S⊂Gof positive measure there is a constant c(S, E) > 0 so that [See Thesis for Equation] whenever ƒ ∈ L² (G) and support ƒ ⊂ E. When such an inequality holds for all ƒ ∈ L² (G) with support f ⊂ E, then E and S are said to be strictly-2-associated. Actually we obtain the conclusion of strict-2-associatedness for a possibly larger class of sets than ∧(p) sets, p > 2, so that our theorem improves upon previously known work even when G is the circle group and E ⊂ Z. Most of Chapter 3 is dedicated to proving this result and showing that it is almost best-possible. In the remainder of Chapter 3 we establish necessary and sufficient conditions for a conclusion stronger than, but similar to strict-2-associatedness. In Chapter 4 we prove that if E is any ∧(p) set, p > 0, (or any set with the same arithmetic structure as ∧(p) sets) and if E satisfies the same necessary technical condition as in Theorem 3.5, then E is strictly-2-associated with all open subsets oiG. The proofs of these theorems depend on the arithmetic structure of ∧(p) sets. This topic is discussed in detail in Chapter 2. It has long been known that ∧(p) sets in Z with p > 2, cannot contain arbitrarily long arithmetic progressions and have "uniformly large gaps". We prove that no ∧(p) set, p > 0, can contain arbitrarily large parallelepipeds, a generalization of arithmetic progressions. This is new for ∧(p) sets, p < 1, in groups other than the circle. We introduce a definition which extends the notion of "uniformly large gaps" to the general setting. Combinatorial arguments are used to prove that sets which do not contain arbitrarily large parallelepipeds have this property. Finally, parallelepipeds are used to show that ∧(p) sets are built up from finite sets in a controlled way. This last fact and the notion of "uniform
A representative sampling plan for auditing health insurance claims
Creators: name: Cohen, Arthur
name: Naus, Joseph
Publisher: name: arXiv
Year: 2007
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: 60K35 (Primary) 60K35 (Secondary)

description: A stratified sampling plan to audit health insurance claims is offered. The stratification is by dollar amount of the claim. The plan is representative in the sense that with high probability for each stratum, the difference in the average dollar amount of the claim in the sample and the average dollar amount in the population, is ``small.'' Several notions of ``small'' are presented. The plan then yields a relatively small total sample size with the property that the overall average dollar amount in the sample is close to the average dollar amount in the population. Three different estimators and corresponding lower confidence bounds for over (under) payments are studied.
description: Published at http://dx.doi.org/10.1214/074921707000000094 in the IMS Lecture Notes Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
A Monotone Approximate Dynamic Programming Approach for the Stochastic Scheduling, Allocation, and Inventory Replenishment Problem: Applications to Drone and Electric Vehicle Battery Swap Stations
Creators: name: Asadi, Amin
name: Pinkley, Sarah Nurre
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: There is a growing interest in using electric vehicles (EVs) and drones for many applications. However, battery-oriented issues, including range anxiety and battery degradation, impede adoption. Battery swap stations are one alternative to reduce these concerns that allow the swap of depleted for full batteries in minutes. We consider the problem of deriving actions at a battery swap station when explicitly considering the uncertain arrival of swap demand, battery degradation, and replacement. We model the operations at a battery swap station using a finite horizon Markov Decision Process model for the stochastic scheduling, allocation, and inventory replenishment problem (SAIRP), which determines when and how many batteries are charged, discharged, and replaced over time. We present theoretical proofs for the monotonicity of the value function and monotone structure of an optimal policy for special SAIRP cases. Due to the curses of dimensionality, we develop a new monotone approximate dynamic programming (ADP) method, which intelligently initializes a value function approximation using regression. In computational tests, we demonstrate the superior performance of the new regression-based monotone ADP method as compared to exact methods and other monotone ADP methods. Further, with the tests, we deduce policy insights for drone swap stations.
On the security of a new image encryption scheme based on chaotic map lattices
Creators: name: Arroyo, David
name: Rhouma, Rhouma
name: Alvarez, Gonzalo
name: Li, Shujun
name: Fernandez, Veronica
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: This paper reports a detailed cryptanalysis of a recently proposed encryption scheme based on the logistic map. Some problems are emphasized concerning the key space definition and the implementation of the cryptosystem using floating-point operations. It is also shown how it is possible to reduce considerably the key space through a ciphertext-only attack. Moreover, a timing attack allows the estimation of part of the key due to the existent relationship between this part of the key and the encryption/decryption time. As a result, the main features of the cryptosystem do not satisfy the demands of secure communications. Some hints are offered to improve the cryptosystem under study according to those requirements.
description: 8 pages, 8 Figures
Infrared spectroscopy of clathrate hydrates for planetary science: the ethylene case
Creators: name: Dartois, Emmanuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Hydrocarbons are observed in the gas or solid phases of solar system objects, including comets, Trans-Neptunian Objects, planets and their moons. In the presence of water ice in these environments, hydrocarbons-bearing clathrate hydrates could form. In clathrate hydrates, guest molecules are trapped in crystalline water cages of different sizes, a phase used in models of planetary (sub-)surfaces or icy bodies such as comets. The phases in presence, the potential estimate of abundances of hydrocarbon species, the spectroscopic behaviour of hydrocarbon species in the different phases must be recorded to provide reference spectra for the comparison with remote observations. We show in this study the specific encaged ethylene signatures, with bands similar in position, but shifted from the pure ethylene ice spectrum. They show a marked temperature dependence both in position and width. Some vibrational modes are activated in the infrared by interaction with the water ice cages.
Novel adjective processing in preschool children (Gerwin et al., 2021)
Creators: name: Gerwin, Katelyn L.
name: Leonard, Laurence B.
name: Schumaker, Jennifer
name: Deevy, Patricia
name: Haebig, Eileen
name: Weber, Christine
Publisher: name: ASHA journals
Year: 2021
Subjects: subject: Language
subject: 170205 Neurocognitive Patterns and Neural Networks
subject: FOS: Psychology

description: Purpose: Recent findings in preschool children indicated novel adjective recall was enhanced when learned using repeated retrieval with contextual reinstatement (RRCR) compared to repeated study (RS). Recall was similar for learned pictures used during training and new (generalized) pictures with the same adjective features. The current study compared the effects of learning method and learned/generalized pictures on the neural processes mediating the recognition of novel adjectives.Method: Twenty typically developing children aged 4;6–5;11 (years;months) learned four novel adjectives, two using RRCR and two using RS. Five-minute and 1-week tests assessed adjective recall using learned and generalized pictures. Also, at the 1-week visit, event-related potentials (ERPs) were recorded to assess children’s processing of learned/generalized pictures, followed by naturally spoken novel adjectives in a match–mismatch paradigm.Results: Naming recall and match–mismatch judgment accuracy were similar for the RS and RRCR conditions and across learned/generalized pictures. However, ERPs revealed more reliable condition effects in the phonological mapping negativity, indexing phonological expectations, and the late positive component, indexing semantic reanalysis, for the adjectives learned in the RRCR relative to the RS condition. Unfamiliar pictures (generalized) elicited larger amplitude N300 and N400 components relative to learned pictures.Conclusions: Although behavioral accuracy measures suggest similar effects of the RS and RRCR learning conditions, subtle differences in the ERPs underlying novel adjective processing indicate advantages of RRCR for phonological processing and semantic reanalysis. While children readily generalized the novel adjectives, ERPs revealed greater cognitive resources for processing unfamiliar compared to learned pictures of the novel adjective characteristics.
Supplemental Material S1. Supplemental analysis.
Gerwin, K. L., Leonard, L. B., Schumaker, J., Deevy, P., Haebig, E., & Weber, C. (2021). Novel adjective processing in preschool children: Evidence from event-related brain potentials. Journal of Speech, Language, and Hearing Research. Advance online publication. https://doi.org/10.1044/2020_JSLHR-20-00332
Algebraic numbers and harmonic analysis in the p-series case
Creators: name: Aubertin, Bruce Lyndon
Publisher: name: University of British Columbia
Year: 2010

description: For the case of compact groups G = Π∞ j=l Z(p)j which are direct products of countably many copies of a cyclic group of prime order p, links are established between the theories of uniqueness and spectral synthesis on the one hand, and the theory of algebraic numbers on the other, similar to the well-known results of Salem, Meyer et al on the circle. Let p ≥ 2 be a prime and let k{x⁻¹} denote the p-series field of formal Laurent series z = Σhj=₋∞ ajxj with coefficients in the field k = {0, 1,…, p-1} and the integer h arbitrary. Let L(z) = - ∞ if aj = 0 for all j; otherwise let L(z) be the largest index h for which ah ≠ 0. We examine compact sets of the form [Algebraic equation omitted] where θ ε k{x⁻¹}, L(θ) > 0, and I is a finite subset of k[x]. If θ is a Pisot or Salem element of k{x⁻¹}, then E(θ,I) is always a set of strong synthesis. In the case that θ is a Pisot element, more can be proved, including a version of Bochner's property leading to a sharper statement of synthesis, provided certain assumptions are made on I (e.g., I ⊃ {0,1,x,...,xL(θ)-1}). Let G be the compact subgroup of k{x⁻¹} given by G = {z: L(z) < 0}. Let θ ɛ k{x⁻¹}, L(θ) > 0, and suppose L(θ) > 1 if p = 3 and L(θ) > 2 if p = 2. Let I = {0,1,x,...,x²L(θ)-1}. Then E = θ⁻¹Ε(θ,I) is a perfect subset of G of Haar measure 0, and E is a set of uniqueness for G precisely when θ is a Pisot or Salem element. Some byways are explored along the way. The exact analogue of Rajchman's theorem on the circle, concerning the formal multiplication of series, is obtained; this is new, even for p = 2. Other examples are given of perfect sets of uniqueness, of sets satisfying the Herz criterion for synthesis, and sets of multiplicity, including a class of M-sets of measure 0 defined via Riesz products which are residual in G. In addition, a class of perfect M₀-sets of measure 0 is introduced with the purpose of settling a question left open by W.R. Wade and K. Yoneda, Uniqueness and quasi-measures on the group of integers of a p-series field, Proc. A.M.S. 84 (1982), 202-206. They showed that if S is a character series on G with the property that some subsequence {SpNj} of the pn-th partial sums is everywhere pointwise bounded on G, then S must be the zero series if SpNj → 0 a.e.. We obtain a strong complement to this result by establishing that series S on G exist for which Sn → 0 everywhere outside a perfect set of measure 0, and for which sup |SpN| becomes unbounded arbitrarily slowly.
Studi di stratigrafia sequenziale della successioni di rampa mioceniche della Piattaforma Campano-Lucana
Creators: name: Gallo, Donatella
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: In Questa tesi è stato condotto uno studio di stratigrafia sequenziale su successioni clastiche di rampa di età miocenica inferiore affioranti nell'Appennino Meridionale,Penisola Sorrentina, Cilento Occidentale (Monte Soprano-Sottano), area del Massiccio del Pollino.Il cui substrato è costituito da depositi depositi della piattaforma carbonatica in facies di scogliera e di laguna.
E su depositi sono di slope della stessa piattaforma nei Monti della Maddalena, ed il substrato è costituito dalle Brecce eoceniche.
Lo studio è stato eseguito con criteri sedimentologici, petrografici,paleontologici, unitamente ai metodi della stratigrafia sequenziale in affioramento.I dati raccolti hanno permesso di avere un quadro abbastanza ampio delle caratteristiche delle varie sezioni studiate e delle loro differenze.La ricostruzione sequenziale ha evidenziato che nelle aree suddette dopo una prima retrogradazione, riconosciuta come la parte basale di una grande trasgressione avvenuta nel Miocene inferiore si sono avuti depositi o forme legati a cicli-Trasgressivo-regressivo.
Development of an Integrated Bioprocess For Butanol Production
Creators: name: Napoli, Fabio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: The research program addressed the conversion of lactose to Acetone-Butanol-Ethanol by Clostridium acetobutylicum DSMZ 792. The research pathway is ultimately targeted at the development of: a) novel and effective tools for the characterization of the peculiar conversion process, cells growth under acidogenesis conditions and solvents production under solventogenesis conditions; b) biofilm reactors for the intensified ABE production. The study was articulated in three paths: i) the characterization of the ABE fermentation process as regards kinetics and yields; ii) the development of a continuous biofilm reactor for the ABE production; iii) the economic assessment of the process for the recover and concentration of solvents.
Casimir-Polder interaction of neutrons with metal or dielectic surfaces
Creators: name: Gebhardt, Valentin
name: Klatt, Juliane
name: Cronenberg, Gunther
name: Filter, Hanno
name: Buhmann, Stefan Yoshi
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: quantum electrodynamics
subject: quantum description of interaction of light and matter
subject: quantum optical phenomena in absorbing
subject: amplifying, dispersive and conducting media
subject: atom and neutron interferometry Abstract
subject: 530
subject: Quantenelektrodynamik
subject: Wechselwirkung
subject: Interferometrie

description: Gefördert durch den Publikationsfonds der Universität Kassel
Controllability of the coupled spin-half harmonic oscillator system
Creators: name: Yuan, Haidong
name: Lloyd, Seth
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a control-theoretic analysis of the system consisting of a two-level atom coupled with a quantum harmonic oscillator. We show that by applying external fields with just two resonant frequencies, any desired unitary operator can be generated.
description: 5 pages
The full curvature effect expected in early X-ray afterglow emission of gamma-ray bursts
Creators: name: Qin, Y. -P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore the influence of the full curvature effect on the flux of early X-ray afterglow of gamma-ray bursts (GRBs) in cases when the spectrum of the intrinsic emission is a power-law. We find that the well-known $t^{-(2+β)}$ curve is present only when the intrinsic emission is extremely short or the emission arises from an exponential cooling. The time scale of this curve is independent of the Lorentz factor. The resulting light curve would contain two phases when the intrinsic emission has a power-law spectrum and a temporal power-law profile with infinite duration. The first phase is a rapid decay one where the light curve well follows the $t^{-(2+β)}$ curve. The second is a shallow decay phase where the power-law index of the light curve is obviously smaller than that in the first phase. The start of the shallow phase is strictly constrained by the fireball radius, which in turn, can put a lower limit to the latter. In the case when the temporal power-law emission lasts a limited interval of time, there will be a third phase after the $t^{-(2+β)}$ curve and the shallow decay phase, which is much steeper than the shallow phase. As an example of application, we fit the XRT data of GRB 050219A with our model and show that the curvature effect alone can roughly account for this burst. Although fitting parameters can not be uniquely determined due to various choices of fitting, a lower limit of the fireball radius of this burst can be estimated, which is $\sim 10^{14}cm$.
description: 28 pages, 9 figures. Accepted for publication in ApJ
Bragg spectroscopy of a strongly interacting Bose-Einstein condensate
Creators: name: Kinnunen, J. J.
name: Holland, M. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study Bragg spectroscopy of a strongly interacting Bose-Einstein condensate using time-dependent Hartree-Fock-Bogoliubov theory. We include approximatively the effect of the momentum dependent scattering amplitude which is shown to be the dominant factor in determining the spectrum for large momentum Bragg scattering. The condensation of the Bragg scattered atoms is shown to significantly alter the observed excitation spectrum by creating a novel pairing channel of mobile pairs.
description: 11 pages, 4 figures
Deconstruct ‘the state’: Complex Entrepreneurialism in Urbanizing China
Creators: name: Cai, Siman
Publisher: name: University of Chicago
Year: 2021
Subjects: subject: state entrepreneurialism; complex urban entrepreneurialism governance; state-business cooperation; fragmented spatial forms.

description: To what extent does "state entrepreneurialism" fit China's urbanization profile? This article revisits the debate about state and market in urban studies. It critically examines the ostensible institutional unity of the Chinese state and unfolds the complexities of entrepreneurialism urban governance in China. The author argues that "state entrepreneurialism" does not adequately encapsulate the corporate-style intergovernmental interactions and ambiguous government-business relations. Market has become an ideology that extensively influences China's intergovernmental relations and development policies. Only at exceptional periods, such as catastrophes and crisis outbreaks, does entrepreneurialism governance take a back seat to other priorities. The paper concludes that urban governance in China should be considered as complex and unsettled with actually existing interaction and conflict between divided self-interested officials and private business actors. It then discusses four fractured spatial forms that are both the arenas and the consequences of complex entrepreneurial governance.
PSIXOLOGIYA FANIDA STRESSGA BARQARORLIK BO'YICHA TADQIQOTLARNING TAHLILI
Creators: name: Ergashev, Hasanboy
Publisher: name: Zenodo
Year: 2023

description: Stressga barqarorlik  me’yoriy ishlash, boshqalar bilan samarali o‘zaro munosabat va murakkab stressli sharoitlarda insonning ichki uyg‘unligini ta’minlashning muhim omilidir.
Standard forms and entanglement engineering of multimode Gaussian states under local operations
Creators: name: Serafini, Alessio
name: Adesso, Gerardo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Symplectic Geometry (math.SG)
subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We investigate the action of local unitary operations on multimode (pure or mixed) Gaussian states and single out the minimal number of locally invariant parametres which completely characterise the covariance matrix of such states. For pure Gaussian states, central resources for continuous-variable quantum information, we investigate separately the parametre reduction due to the additional constraint of global purity, and the one following by the local-unitary freedom. Counting arguments and insights from the phase-space Schmidt decomposition and in general from the framework of symplectic analysis, accompany our description of the standard form of pure n-mode Gaussian states. In particular we clarify why only in pure states with n<=3 modes all the direct correlations between position and momentum operators can be set to zero by local unitary operations. For any n, the emerging minimal set of parametres contains complete information about all forms of entanglement in the corresponding states. An efficient state engineering scheme (able to encode direct correlations between position and momentum operators as well) is proposed to produce entangled multimode Gaussian resources, its number of optical elements matching the minimal number of locally invariant degrees of freedom of general pure n-mode Gaussian states. We demonstrate that so-called "block-diagonal" Gaussian states, without direct correlations between position and momentum, are systematically less entangled, on average, than arbitrary pure Gaussian states.
description: 14 pages, 2 figures, IOP style. Published in J. Phys. A, Special Issue on Quantum Information, Communication, Computation and Cryptography (the arXiv version has an extra note added)
Rich vocabulary instruction (McGregor et al., 2021)
Creators: name: McGregor, Karla K.
name: Horne, Amanda Owen Van
name: Curran, Maura
name: Cook, Susan Wagner
name: Cole, Renee
Publisher: name: ASHA journals
Year: 2021
Subjects: Language

description: Purpose: The aims of the study were to explore responses of children with developmental language disorder (DLD) to rich vocabulary instruction and to identify potential factors that contribute to outcomes.Method: Children with DLD participated in a language intervention embedded within a science camp. Using parent and clinician reports, standardized tests, probes, notes, and video, we derived descriptions of seven of the campers who received a vocabulary intervention that incorporated principles of rich instruction. We present them here as a case series.Results: Five cases responded to the intervention with modest gains in Tier 2 science vocabulary and science knowledge. One case demonstrated no response, and another was unable to complete the intervention. The latter two cases presented with triple risks: DLD, executive function deficits, and stressors associated with poverty. In comparison, the best responder also lived in poverty and had DLD, but he had intact executive function, strengths in extant vocabulary, stronger knowledge of science, better engagement in the science and language intervention activities, and was older. Other factors that seemed to contribute to outcomes included the complexity of the word forms and dosage.Conclusions: Translating research on rich instruction to clinical practice is challenging. This case series motivated hypotheses about the nature of the challenge and what to do about it, the primary one being that the modest success of rich vocabulary instruction for children with DLD is not a limitation of the approach itself but rather a reflection of the difficulty of delivering the intervention while tailoring the targets, approach, and dosage to the needs of individual children with DLD.
Supplemental Material S1. Guidelines provided to student clinicians.
McGregor, K. K., Van Horne, A. O., Curran, M., Cook, S. W., & Cole, R. (2021). The challenge of rich vocabulary instruction for children with developmental language disorder. Language, Speech, and Hearing Services in Schools. Advance online publication. https://doi.org/10.1044/2020_LSHSS-20-00110
METODI STATISTICI DI VALUTAZIONE EX ANTE DI IMPATTO DELLA REGOLAMENTAZIONE
Creators: name: Marchitelli, Marcella
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: La Valutazione Ex Ante degli Impatti dei regolamenti e degli investimenti pubblici, richiama problematiche di forte attualità e soprattutto di notevole portata. Rappresenta uno degli strumenti decisionali più rilevanti a disposizione della Pubblica Amministrazione per migliorare la qualità della Regolamentazione e per promuovere le condizioni per lo sviluppo sostenibile, economico e sociale del Paese. La nostra attenzione si è concentrata sul processo valutativo ex ante, proponendo un approccio originale basato sulla Conjoint Analysis e sue estensioni. Da questo punto di vista, il processo valutativo si è assunto di natura composita con riferimento a diverse dimensioni di analisi (Efficienza, Efficacia, Sostenibilità, Pertinenza e Utilità), cioè i criteri che sono alla base della Valutazione. Si è proposto altresì di introdurre un opportuno criterio di sintesi delle dimensioni di una valutazione basata sull'Analisi Fattoriale Multicriteri; che consente di identificare la soluzione ottimale, tra le alternative di una regolamentazione o di una politica e di utilizzare opportune rappresentazioni grafiche (mappe decisionali), con l'ipotesi controfattuale. Ciò al  fine di valutare sia l'impatto della soluzione proposta, ma altresì di evidenziare le linee di intervento (livelli dei fattori), idonei al raggiungimento di questo obiettivo.
Congenital immunodeficiencies and susceptibility to viral infections: definition of novel clinical entities in their pathogenic mechanism and molecular alteration
Creators: name: Busiello, Rosanna
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: [ITALIANO] Le malattie di immunodeficienza primarie (PIDs) rappresentano un gruppo  di molte sindromi eterogenee caratterizzate da uno sviluppo o da un difetto funzionale del Sistema immune.  Sono state descritte più di 100 malattie ereditarie di immunodeficienza  Il fenotipo clinico è altamente variabile, ed è influenzata da infezioni microbiche e suscettibilità ad allergie, malattie linfoproliferative o autoimmuni.  La maggior parte di queste sindromi sono caratterizzate da una trasmissione monogenica e spesso determinano alterazione della risposta immune.  Anche se la maggior parte di tali sindromi si manifesta nel corso dei primi mesi di vita ci sono molti altri disordini, di recente identificazione che si manifestano nel corso dell’età adulta.  Accanto alle forme classiche in cui sono evidenti segni di immunodeficienza esistono diverse forme nelle quali il fenotipo di presentazione clinica risulta meno suggestivo di immunodeficit.  In tali forme di malattia risulta più difficile fornire una diagnosi per cui molte di queste forme risultano non diagnosticate.  Scopo di tale lavoro è stato quello di chiarire per alcuni di questi la correlazione fenotipo/genotipo, identificare marker biochimici per rendere possibile la diagnosi e eventualmente stabilire il meccanismo patogenetico alla base dello sviluppo di tali sindromi. / [ENGLISH] Primary immunodeficiency diseases (PIDs) represent a group of most eterogeneous syndromes characterized by development or functional defect of the Immune system.  More than 100 inherited conditions described immunodeficiencies exist.   Clinical presentation is highly variable, ranging from various patterns of microbial susceptibility to allergy, lymphoproliferation or autoimmune manifestation.  The vast majority of these syndromes are monogenic and lead to defects in any aspect of the immune response.  Although several form of them occur in the first time of life there are many other disorders in which the clinical manifestation develop during adulthood.  Along with typical form of these syndromes, in which there are a clear signs of immune defect, there are several diseases in which the phenotypes are less suggestive of immunodeficiency.  In these form it is very difficult make the diagnosis so many cases are misdiagnosed.  In the course of this Phd program we try to better clarify for some of these complex phenotypes the correlation between genotype and phenotype, identify the biochemical biomarkers that make possible the diagnosis and eventually clarify the pathogenetic mechanism of these syndromes.
Patologie ostetriche e mutazioni trombofiliche
Creators: name: Vitiello, Ciro
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: Lo scopo del lavoro è stato quello di valutare , in donne con patologie ostetriche ,la presenza di associazione  tra Mutazioni Trombofiliche ed alcune Patologie Ostetriche . Sono state valutate 141 donne , tutte attentamente monitorate . Alcune sono state sottoposte a terapia eparinica . Per alcune pazienti si è ritenuto opportuno un taglio cesareo pre-termine . Sono state altresì seguite 4 pazienti affette da  Sindrome da Anticorpi Antifosfolipidi (APS) . Si sono , quindi , considerate sia Trombofilie Congenite che Acquisite . Allo stato non appare agevole fornire adeguate raccomandazioni in merito ad uno screening per le donne con tali complicanze . Uno screening della popolazione generale risulta ingiustificato in quanto troppo oneroso  e in quanto  la correlazione  fra genotipo e fenotipo può essere influenzata da altri fattori . Donne che nel corso di gravidanza sviluppano complicanze come  ipertensione arteriosa , pre- eclampsìa , eclampsìa , IUGR , MEF , abortività ripetuta , distacco di placenta etc . dovrebbero  effettuare lo screening per Trombofilìa , ed estendere tali tests a 3 mesi dopo il parto o la fine della gravidanza . Le pazienti con aborto ricorrente e portatrici di un fattore tombifilico dovrebbero essere trattate con eparina a basso peso molecolare