cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Impact of sodium ions on material properties, gelation and storage stability of citrus pectin
Creators: name: Kastner, Hanna
name: Einhorn-Stoll, Ulrike
name: Fatouros, Alexandra
name: Drusch, Stephan
Publisher: name: Technische Universität Berlin
Year: 2020
Subjects: subject: 664 Lebensmitteltechnologie
subject: pectin
subject: sodium ion
subject: customisation
subject: gelation
subject: thermal degradation

description: Material properties, gelation and storage stability of demethoxylated pectin samples strongly varied in dependence on the applied modification method. It was assumed that the content of sodium ions and their resulting electrostatic interactions with free carboxyl groups were crucial for these differences. Sodium ions were widely removed by acidic modification but added during alkaline and enzymatic modification using NaOH in a pH-stat method. It was the aim of the present study to investigate the individual impact of sodium ions on pectin properties using samples with similar molecular parameters but different sodium ion content. Sodium enrichment of pectin increased the pectin particle surface and, as a consequence, the pectin-water-interactions. Differences in molecular structure and material properties were reflected in simultaneous thermal analysis; an exothermic starting peak in DSC vanished and pectin pyrolysis was accelerated after sodium ion enrichment. Gel formation was affected by sodium ions. It was delayed in a sugar-acid system by reducing the number of hydrogen bonds and accelerated in a sugar-calcium system by reducing electrostatic repulsion. Sodium ions increased the storage stability of pectin. They were bound to free carboxyl groups (-COONa) and restricted degradation reactions during storage which required these groups, in particular depolymerisation by decarboxylation.
Finite-size scaling of coherence and steered coherence in the Lipkin-Meshkov-Glick model
Creators: name: Hu, Ming-Liang
name: Fang, Fan
name: Fan, Heng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum coherence reflects the origin of quantumness and might be capable of extracting the subtle nature of a system. We investigate the ground-state coherence and steered coherence in the Lipkin-Meshkov-Glick model and show that they detect faithfully the quantum phase transitions of this model. Moreover, we carry out scaling analysis on the coherence and steered coherence by means of the continuous unitary transformation method and it is found that the scaling exponents are uniquely determined by the phase region of this model. These results may provide useful insights into the mechanism underlying quantum criticality in many-body systems.
description: 10 pages, 5 figures
Exact Floquet states of a driven condensate and their stabilities
Creators: name: Hai, Wenhua
name: Lee, Chaohong
name: Zhu, Qianquan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the Gross-Pitaevskii equation for a classically chaotic system, which describes an atomic Bose-Einstein condensate confined in an optical lattice and driven by a spatiotemporal periodic laser field. It is demonstrated that the exact Floquet states appear when the external time-dependent potential is balanced by the nonlinear mean-field interaction. The balance region of parameters is divided into a phase-continuing region and a phase-jumping one. In the latter region, the Floquet states are spatiotemporal vortices of nontrivial phase structures and zero-density cores. Due to the velocity singularities of vortex cores and the blowing-up of perturbed solutions, the spatiotemporal vortices are unstable periodic states embedded in chaos. The stability and instability of these Floquet states are numerically explored by the time evolution of fidelity between the exact and numerical solutions. It is numerically illustrated that the stable Floquet states could be prepared from the uniformly initial states by slow growth of the external potential.
description: 14 pages, 3 eps figures, final version accepted for publication in J. Phys. B
Stability of hypothetical AgIICl2 polymorphs under high pressure, revisited : a computational study
Creators: name: Grzelak, A.
name: Grochala, W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A comparative computational study of stability of candidate structures for an as yet unknown silver dichloride AgCl2 is presented. It is found that all considered candidates have a negative enthalpy of formation, but are unstable towards charge transfer and decomposition into silver(I) chloride and chlorine within the DFT and hybrid DFT approaches in the entire studied pressure range. Within SCAN approach, several of the true AgIICl2 polymorphs (i.e. containing Ag(II) species) exhibit a region of stability below ca. 20 GPa. However, their stability with respect to aforementioned decomposition decreases with pressure by account of all three DFT methods, which suggests a limited possibility of high pressure synthesis of AgCl2. Some common patterns in pressure induced structural transitions observed in the studied systems also emerge, which further testify to an instability of hypothetical AgCl2 towards charge transfer and phase separation.
description: 17 pages, 10 figures, 1 table
Energy Dissipation and Fluctuation-Response in Driven Quantum Langevin Dynamics
Creators: name: Saito, Keiji
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Energy dissipation in a nonequilibrium steady state is studied in driven quantum Langevin systems. We study energy dissipation flow to thermal environment, and obtain a general formula for the average rate of energy dissipation using an autocorrelation function for the system variable. This leads to a general expression of the equality that connects the violation of the fluctuation-response relation to the rate of energy dissipation, the classical version of which was first studied by Harada and Sasa. We also point out that the expression depends on coupling form between system and reservoir.
description: 4 pages, 1 figure
Analyzing the Feasibility of Rural Rental Apartments in the Great Plains: A Guide for Local Decision Makers
Creators: name: Schmidt, Joseph F.
name: Doeksen, Gerald A.
name: Frye, Jack
name: Maxey, John C.
name: Schmidt, Joseph F.
name: Doeksen, Gerald A.
name: Frye, Jack
name: Maxey, John C.
Publisher: name: Unknown
Year: 1976
Subjects: subject: Community/Rural/Urban Development
subject: Demand and Price Analysis
subject: Production Economics
subject: Budget
subject: Housing
subject: Rural

description: A budget analysis was developed which would aid in the evaluation of proposed rental apartments in rural areas. The analysis used average construction and operating costs computed from data obtained from FmHA on existing rural rental units in western Oklahoma. Average construction costs per apartment were found to be $12,711 and $11,634 for a fourplex and low-rise structure, respectively. Average annual operating expenses were $463 and $438 per apartment, respectively without utilities furnished. Furnishing utilities added approximately $400 per apartment to annual operating costs. These average costs are used in the budget analysis to estimate required capital and operating expenses. Accounting profits are estimated by subtracting expenses from estimated receipts. Alternative apartment sizes, types of structure, and rental rates are evaluated using the budget analysis. Blank budget forms are provided. Managerial strategies of existing rural rental apartments and guidelines for measuring demand are discussed.
AAACS 2013 Presidential Address - Liminal, Permeable Regions and Metaphoric Scale: Strategies for Avoiding Orientalism and Reification in Trans-National Curriculum Studies
Creators: name: Appelbaum, Peter
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2014

description: In response to the 2013 conference theme and call, AAACS president Peter Appelbaum raises the specter of remaining rooted in a Western frame of reference while dabbling in the exotic and offers three strategies for hybridizing an international field.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 10 No 1 (2014)
Measurement of Ultra-Low Potassium Contaminations with Accelerator Mass Spectrometry
Creators: name: Dong, K. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Levels of trace radiopurity in active detector materials is a subject of major concern in low-background experiments. Among the radio-isotopes, $\k40$ is one of the most abundant and yet whose signatures are difficult to reject. Procedures were devised to measure trace potassium concentrations in the inorganic salt CsI as well as in organic liquid scintillator (LS) with Accelerator Mass Spectrometry (AMS), giving, respectively, the $\k40$-contamination levels of $\sim 10^{-10}$ and $\sim 10^{-13}$ g/g. Measurement flexibilities and sensitivities are improved over conventional methods. The projected limiting sensitivities if no excess of potassium signals had been observed over background are $8 \times 10^{-13}$ g/g and $3 \times 10^{-17}$ g/g for the CsI and LS, respectively. Studies of the LS samples indicate that the radioactive contaminations come mainly in the dye solutes, while the base solvents are orders of magnitude cleaner. The work demonstrate the possibilities of measuring naturally-occurring isotopes with the AMS techniques.
description: 18 pages, 4 figures, 3 tables
Tasanhak, Neo-Confucianism, & Curriculum Studies: Complicating Conversations in Human Nature, Knowledge, and Justice
Creators: name: Moon, Seungho
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2013

description: This debut article in our International Literature section demonstrates how the work of Korean philosopher Chong Yag-yong can extend our understandings regarding the historic struggle for educational equity, increased pedagogical sensitivity, and larger pedagogical purposes.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 9 No 1 (2013)
Readout of quantum screening effects using a time-dependent probe
Creators: name: Dashti, Nastaran
name: Acciai, Matteo
name: Kheradsoud, Sara
name: Misiorny, Maciej
name: Samuelsson, Peter
name: Splettstoesser, Janine
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In voltage- and temperature-biased coherent conductors quantum screening effects occur if the conductor's transmission is energy-dependent. Here, we show that an additional ac-driven terminal can act as a probe for a direct readout of such effects, hitherto unexplored. We find that screening of charges induced by the static biases impacts already their standard linear thermoelectric response coefficients due to nonlinear effects when accounting for the frequency of the time-dependent driving. Those effects should be observable under realistic experimental conditions and can literally be switched on and off with the ac-driving.
description: 5+8 pages, 2+4 figures
Summary of the Report, Foreign Investment in U.S. Real Estate
Creators: name: Wunderlich, Gene
name: Wunderlich, Gene
Publisher: name: Unknown
Year: 1976
Subjects: subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: Land Economics/Use
subject: Research Methods/ Statistical Methods
subject: Foreign investment
subject: Alien ownership
subject: Real estate
subject: Land ownership
subject: Land tenure
subject: Information systems

description: Findings of 20 papers on various aspects of the expected social and economic impacts of foreign investment in U.S. land are summarized. The papers conclude U.S. policy on foreign investment in land hinges on two questions: Should ownership of U.S. land be conditioned in any way by citizenship status? Should information on the ownership of land, both nominal and beneficial, be readily available to the public? Several actions are recommended: (1) continuation of current U.S. policy of limited Federal restrictions on alien ownership of land, pending completion of a comprehensive study of the long-term social and economic impacts of such ownership; (2) development of a Federal reporting system for identification of alien owners of U.S. land; (3) adoption of State laws requiring local officials to identify alien interests in land, to make the data available to the public, and to send the information to the State, where it then could be collected by a Federal agency ; and (4) creation of a commission with Federal, State, and local representation that would design more efficient landownership information collecting and handling systems.
Modified laryngoscore for difficult laryngoscopy
Creators: name: Shehadeh, Rabie
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 320217
subject: Otorhinolaryngology

description: The research primarily focuses on establishing the Modified Laryngoscore as an innovative predictor for difficult laryngeal exposure. This score incorporates various patient parameters like BMI, gender, neck circumference, Mallampati score, smoking status, neck mobility, mouth opening, dental status, and thyromental distance. The study reveals that higher BMI and male gender are significantly associated with increased difficulty in laryngoscopy.
Undoing Double Binds in Curriculum: On Cosmopolitan Sensibilities in US Curriculum Studies
Creators: name: Jupp, James C.
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2013

description: Cosmopolitan sensibilities in curriculum studies are placed in conversation with cultural studies' influences on curriculum studies in hopes of providing a "recursive and historical return for re-invigorating curriculum studies in the next moment."
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 9 No 1 (2013)
Redshift drift cosmography for model-independent cosmological inference
Creators: name: Heinesen, Asta
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We develop a cosmographic framework for analysing redshift drift signals of nearby sources model-independently, i.e., without making assumptions about the metric description of the Universe. We show that the Friedmann-Lema\^ıtre-Robertson-Walker (FLRW) prediction is altered nontrivially by regional anisotropies and inhomogeneities. In particular, we find that the position drift of the sources is nontrivially linked to the redshift drift signal. The redshift drift signal for nearby sources might be formulated in terms of an effective deceleration parameter, which reduces to the FLRW deceleration parameter in the homogeneous and isotropic limit. The presented cosmographic framework can be used for model-independent data analysis, exploiting the fact that the exact anisotropic redshift drift signal at lowest order in redshift is given by a finite set of physically interpretable coefficients. We discuss physical limits of interest as well as challenges related to the framework.
description: 10 pages, matches published version
CaCrO3: an anomalous antiferromagnetic metallic oxide
Creators: name: Komarek, A. C.
name: Streltsov, S. V.
name: Isobe, M.
name: Moeller, T.
name: Hoelzel, M.
name: Senyshyn, A.
name: Trots, D.
name: Fernandez-Diaz, M. T.
name: Hansen, T.
name: Gotou, H.
name: Yagi, T.
name: Ueda, Y.
name: Anisimov, V. I.
name: Grueninger, M.
name: Khomskii, D. I.
name: Braden, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Combining infrared reflectivity, transport, susceptibility and several diffraction techniques, we find compelling evidence that CaCrO3 is a rare case of a metallic and antiferromagnetic transition-metal oxide with a three-dimensional electronic structure. LSDA calculations correctly describe the metallic behavior as well as the anisotropic magnetic ordering pattern of C type: The high Cr valence state induces via sizeable pd hybridization remarkably strong next-nearest neighbor interactions stabilizing this ordering. The subtle balance of magnetic interactions gives rise to magneto-elastic coupling, explaining pronounced structural anomalies observed at the magnetic ordering transition.
Reflections on Mnemosyne's Pool: First Thoughts on Deaf Pedagogy
Creators: name: Novodvorski, Brent
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2013

description: The struggle over deaf pedagogy sheds new light upon the logocentric biases of Western knowledge systems, which have historically restricted appreciation of deaf ways of knowing among the hearing educators responsible for their education.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 9 No 1 (2013)
Relative availability of iron to rats from beef, soy protein and a beef-soy protein mixture as determined by iron repletion assay
Creators: name: Nikolaiczuk, Marcia Jane
Publisher: name: University of British Columbia
Year: 2010

description: Male weanling Wistar rats were fed a low-iron basal diet for 3 weeks. The iron depleted rats were then divided into 9 groups according to a randomized block design based on body weight. During the repletion period of 2 weeks, one group was fed the low-iron basal diet. The other eight groups received either the basal diet to which was added 5, 10, 15, 20 or 25 mg iron per kg diet as ferrous sulfate or test source diets formulated to provide a total of 15 mg iron per kg diet from either freeze-dried ground beef, textured defatted soy flour product or a 2.3:1 (w/w) mixture of beef and soy product. All diets were isocaloric and isonitrogenous. The relative biological value (RBV) of iron in the test source diet was calculated as the ratio of the amounts of iron from the reference source (ferrous sulfate) and the test source diet required to give the same response in hemoglobin or hematocrit. The RBVs ± 95% confidence limits, calculated on the basis of final hemoglobin levels and hematocrit values, were respectively: freeze-dried ground beef, 56 ± 7 % and 62 ± 7 %; fortified textured defatted soy flour product, 81 ± 10 % and 79 ± 10 %; 2.3:1 (w/w) mixture of freeze-dried ground beef and soy flour product, 65 ± 6 % and 68 ± 6 %. The RBVs obtained for the iron in beef and for that in the soy flour product suggest that the anemic rat might not be a suitable model for normal man when screening such foods for their available iron. In normal man, the absorption of the iron in beef is comparable to that of inorganic reference iron, while that in textured soy flour is about one third.
Report of proceedings of the second annual convention of the hospitals of British Columbia, held at Victoria, in the Empress Hotel, on July 8th, 9th and 10th, 1919
Creators: name: British Columbia Hospitals' Association
Publisher: name: Vancouver : G. A. Roedde, Ltd., Printers
Year: 2015

description: "This convention was held under the patronage of His Honour the Lieutenant-Governor of British Columbia, Sir Frank Stillman Barnard" -- Title page
The Taba-Tyler Rationales
Creators: name: Läänemets, Urve
name: Kalamees-Ruubel, Katrin
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2013

description: This article discusses the relationship between the famous Tyler Rationale (1949-50) and the influential and foundational earlier work in curriculum development of Hilda Taba.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 9 No 2 (2013)
Double solid twistor spaces: the case of arbitrary signature
Creators: name: Honda, Nobuhiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 32L25; 53A30

description: In a recent paper (math.DG/0701278) we constructed a series of new Moishezon twistor spaces which is a kind of variant of the famous LeBrun twistor spaces. In this paper we explicitly give projective models of another series of Moishezon twistor spaces on nCP^2 for arbitrary n>2, which can be regarded as a generalization of the twistor spaces of a 'double solid type' on 3CP^2 studied by Kreussler, Kurke, Poon and the author. Similarly to the twistor spaces of 'double solid type' on 3CP^2, projective models of present twistor spaces have a natural structure of double covering of a CP^2-bundle over CP^1. We explicitly give a defining polynomial of the branch divisor of the double covering whose restriction to fibers are degree four. If n>3 these are new twistor spaces, to the best of the author's knowledge. We also compute the dimension of the moduli space of these twistor spaces. Differently from math.DG/0701278, the present investigation is based on analysis of pluri-(half-)anticanonical systems of the twistor spaces.
description: 30 pages, 3 figures; v2: title changed (the original title was "Explicit construction of new Moishezon twistor spaces, II".)
Plagiarism and the "Tyler Rationale"
Creators: name: Pinar, William F.
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2013

description: Looking carefully at Tyler’s development of what has come to be called the Rationale, Pinar suggests that Ralph Tyler may have disingenuously assumed authorship of this foundational element of curriculum development in the post World War II years.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 9 No 2 (2013)
An analysis of problems encountered in the preparation of a regional health and hospital study in British Columbia
Creators: name: Morton, Wendy Lynn
Publisher: name: University of British Columbia
Year: 2010

description: In 1982/83, the author, in the role of consultant to the firm of Thompson Berwick Pratt and Partners, Architects and Planners, Vancouver, conducted a regional health needs study In the interior of British Columbia for the Board of the Thompson-Nicola Regional Hospital District (TNRHD). The completed report entitled, The Thompson-Nicola Regional Hospital District Health and Hospital Study has subsequently been tabled as a public document. This planning thesis is concerned with the processes of conducting the study which was more complex than originally envisaged. The narrative describes the planning model developed by the consultants to fit the terms of reference which were, in brief, to assess existing local health service needs and the supply and distribution of health resources in the region, and to project future requirements through 1991. In attempting to develop the model it was realized that the Thompson-Nicola Regional Hospital Board had limited powers to initiate a study for all health and hospital providers in the region. The Board's planning mandate was limited by statute, and this limitation is explored. Co-operation among local providers was achieved through persuasion. The Ministry of Health (MOH) had funded 60 per cent of the project, thereby indicating to local groups that it supported the Board's planning approach. The Ministry of Health's concern for rational planning has already been expressed in other ways (e.g. The British Columbia Hospital Role and Funding Studies) although planning is still ad hoc rather than part of a clear Ministry policy. The lack of integration among providers made it difficult to determine need and demand for health services in the region. There were specific problems of definition of need, and specific and recurrent problems of data collection and analysis because of the large number of independent data resource groups involved. Problems in selecting and applying models of analysis were also experienced. Nevertheless, a model of health services needs and resource requirements was constructed.
Variations and estimators for the selfsimilarity order through Malliavin calculus
Creators: name: Tudor, Ciprian
name: Viens, Frederi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Using multiple stochastic integrals and the Malliavin calculus, we analyze the asymptotic behavior of quadratic variations for a specific non-Gaussian self-similar process, the Rosenblatt process. We apply our results to the design of strongly consistent statistical estimators for the self-similarity parameter $H$. Although, in the case of the Rosenblatt process, our estimator has non-Gaussian asymptotics for all $H>1/2$, we show the remarkable fact that the process's data at time 1 can be used to construct a distinct, compensated estimator with Gaussian asymptotics for $H\in(1/2,2/3)$.
Dissecting the $H_0$ and $S_8$ tensions with Planck + BAO + supernova type Ia in multi-parameter cosmologies
Creators: name: Anchordoqui, Luis A.
name: Di Valentino, Eleonora
name: Pan, Supriya
name: Yang, Weiqiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The mismatch between the locally measured expansion rate of the universe and the one inferred from observations of the cosmic microwave background (CMB) assuming the canonical $Λ$CDM model has become the new cornerstone of modern cosmology, and many new-physics set ups are rising to the challenge. Concomitant with the so-called $H_0$ problem, there is evidence of a growing tension between the CMB-preferred value and the local determination of the weighted amplitude of matter fluctuations $S_8$. It would be appealing and compelling if both the $H_0$ and $S_8$ tensions were resolved at once, but as yet none of the proposed new-physics models have done so to a satisfactory degree. Herein, we adopt a systematic approach to investigate the possible interconnection among the free parameters in several classes of models that typify the main theoretical frameworks tackling the tensions on the universe expansion rate and the clustering of matter. Our calculations are carried out using the publicly available Boltzmann solver CAMB in combination with the sampler CosmoMC. We show that even after combining the leading classes of models sampling modifications of both the early and late time universe a simultaneous solution to the $H_0$ and $S_8$ tensions remains elusive.
description: References added, matching version to be published in JHEAp (v3. typo corrected)
Construction of a Wilson action for the Wess-Zumino model
Creators: name: Sonoda, Hidenori
name: Ulker, Kayhan
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a Wilson action for the Wess-Zumino model by applying the exact renormalization group perturbatively. Using neither superfields nor auxiliary fields, we construct a supersymmetric action only with complex scalar and Majorana spinor fields. We adopt the BRST (antifield) formalism to show the consistency of the construction to all orders in loop expansions. The resulting action has a quadratically divergent scalar mass term which is absent in the superfield formalism.
description: 33 pages; reformatted using ptptex; accepted for publication in Progress of Theoretical Physics
Intense sulphurization process can lead to superior heterojunction properties in Cu(In,Ga)(S,Se)$_2$ thin-film solar cells
Creators: name: Cojocaru-Miredin, Oana
name: Ghorbani, Elaheh
name: Raghuwanshi, Mohit
name: Jin, Xiaowei
name: Pandav, Dipak
name: Keutgen, Jens
name: Schneider, Reinhard
name: Gerthsen, Dagmar
name: Albe, Karsten
name: Scheer, Roland
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Sulphurization processes in Cu(In,Ga)Se$_2$ thin-film solar cells has been intensively studied in the last decade as a viable alternative to the existing Ga-grading. The main advantage of using S grading is that by substituting Se with S we will achieve not only an upshift of the conduction-band minimum as done by employing Ga grading, but also a downshift of the valence-band maximum. Several existing studies stipulate that S is very often inserted in too high concentrations into Cu(In,Ga)Se$_2$ absorber by sulphurization resulting in a deteriorated device performance instead of the expected beneficial effect. However, we demonstrate here that the intense sulphurization process when accompanied by Ga-grading leads to improved electrical properties of the buffer/absorber heterojunction. More exactly, this double grading at the absorber surface leads to strong reduction of the p-doping and hence to a change in the band diagram. This work also proves that the intense sulphurization process is accompanied by strong structural and chemical changes, i.e., by the formation of a S-rich CuIn(S,Se)$_2$ compound at the absorber surface. Finally, all these experimental findings were complemented by ab-initio calculations of the conduction-band and valence-band offsets between absorber and buffer obtained by using density functional theory. Hence, the present work opens up new possibilities for synthesizing Cu(In,Ga)(Se,S)2 solar cells with superior cell performance when using an intense sulphurization process.
What gives with Psychoanalysis and Education? An Essay Review of Peter Tubman's Disavowed Knowledge
Creators: name: Britzman, Deborah P.
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2013

description: Deborah Britzman’s essay review of Peter Taubman’s Disvowed Knowledge explores the complex character and relationships that exist between education and psychoanalysis in her essay.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 9 No 2 (2013)
Time is (Not) Always Running Out
Creators: name: Jardine, David W.
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2013

description: David Jardine’s essay provides explores the origins and contrasts between the industrially based experience of time around which much contemporary schooling has been organized, and the more compelling and difficult whiling time that is indigenous to thoughtful, rich and worthwhile inquiry in schools.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 9 No 2 (2013)
Catalogue of exoplanets accessible in reflected starlight to the Nancy Grace Roman Space Telescope. A population study and prospects for phase-curve measurements
Creators: name: Carrión-González, Óscar
name: Muñoz, Antonio García
name: Cabrera, Juan
name: Csizmadia, Szilárd
name: Santos, Nuno C.
name: Rauer, Heike
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: Reflected starlight measurements will open a new path in the characterization of directly imaged exoplanets. However, we still lack a population study of known targets amenable to this technique. Here, we investigate which of the about 4300 exoplanets confirmed to date are accessible to the Roman Space Telescope's coronagraph (CGI) in reflected starlight at reference wavelengths $λ$=575, 730 and 825 nm. We carry out a population study and also address the prospects for phase-curve measurements. We used the NASA Exoplanet Archive as a reference for planet and star properties, and explored the impact of their uncertainties on the exoplanet's detectability by applying statistical arguments. We define a planet as Roman-accessible on the basis of the instrument inner and outer working angles and its minimum planet-to-star constrast (IWA, OWA, $C_{min}$). We adopt for these technical specifications three plausible configurations labeled as pessimistic, intermediate and optimistic. Our key outputs for each exoplanet are its probability of being Roman-accessible ($P_{access}$), the range of observable phase angles, the evolution of its equilibrium temperature, the number of days per orbit that it is accessible and its transit probability. In the optimistic scenario, we find 26 Roman-accessible exoplanets with $P_{access}$>25% and host stars brighter than $V$=7 mag. This population is biased towards planets more massive than Jupiter but also includes the super-Earths tau Cet e and f which orbit near their star's habitable zone. A total of 13 planets are part of multiplanet systems, 3 of them with known transiting companions, offering opportunities for contemporaneous characterization. The intermediate and pessimistic scenarios yield 10 and 3 Roman-accessible exoplanets, respectively. We find that inclination estimates (e.g. with astrometry) are key for refining the detectability prospects.
description: Accepted for publication in A&A. 34 pages, 12 Tables, 24 Figures
Microsatellite markers development and the confirmation test based on parentage analysis in Macrobrachium rosenbergii (DE MAN, 1879)
Creators: name: Panom K. Sodsuk
name: Srirat Sodsuk
name: Ponlachart Pewnane
name: Supattra Uraiwan
Publisher: name: Genetics Society of Thailand
Year: 2010
Subjects: Macrobrachium rosenbergii, microsatellitemarker, confirmation test, parentage analysis

description: 2, 3, Thai Journal of Genetics
de Sitter vacua in no-scale supergravities and Calabi-Yau string models
Creators: name: Covi, Laura
name: Gomez-Reino, Marta
name: Gross, Christian
name: Louis, Jan
name: Palma, Gonzalo A.
name: Scrucca, Claudio A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform a general analysis on the possibility of obtaining metastable vacua with spontaneously broken N=1 supersymmetry and non-negative cosmological constant in the moduli sector of string models. More specifically, we study the condition under which the scalar partners of the Goldstino are non-tachyonic, which depends only on the Kahler potential. This condition is not only necessary but also sufficient, in the sense that all of the other scalar fields can be given arbitrarily large positive square masses if the superpotential is suitably tuned. We consider both heterotic and orientifold string compactifications in the large-volume limit and show that the no-scale property shared by these models severely restricts the allowed values for the `sGoldstino' masses in the superpotential parameter space. We find that a positive mass term may be achieved only for certain types of compactifications and specific Goldstino directions. Additionally, we show how subleading corrections to the Kahler potential which break the no-scale property may allow to lift these masses.
description: 34 pages, LaTex. v2 typos corrected. v3 published version
Campbell equilibrium equation and pseudo-likelihood estimation for non-hereditary Gibbs point processes
Creators: name: Dereudre, David
name: Lavancier, Frédéric
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In this paper, we study Gibbs point processes involving a hardcore interaction which is not necessarily hereditary. We first extend the famous Campbell equilibrium equation, initially proposed by Nguyen and Zessin [Math. Nachr. 88 (1979) 105--115], to the non-hereditary setting and consequently introduce the new concept of removable points. A modified version of the pseudo-likelihood estimator is then proposed, which involves these removable points. We consider the following two-step estimation procedure: first estimate the hardcore parameter, then estimate the smooth interaction parameter by pseudo-likelihood, where the hardcore parameter estimator is plugged in. We prove the consistency of this procedure in both the hereditary and non-hereditary settings.
description: Published in at http://dx.doi.org/10.3150/09-BEJ198 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
Noncommutative field theory with the Wick-Voros product
Creators: name: Galluccio, Salvatore
name: Lizzi, Fedele
name: Vitale, Patrizia
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the noncommutative scalar field theory in the presence of the Wick-Voros product (or normally ordered product), a variant of the more studied Moyal product. We discuss both the classical and the quantum field theory in the quartic potential case, and calculate the Green's functions up to one loop, for the two and four points cases.
description: This paper has been merged with arXiv:0807.1498 and has become arXiv:0810.2095. This has been published in Physical Review D 78.085007 (2008). The older version is available as arXiv:0807.1498v2
Coherence Control of Directional Nonlinear Photocurrent in Spatially Symmetric Systems
Creators: name: Shi, Yongliang
name: Zhou, Jian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The interplay between crystal symmetry and its optical responses is at the heart of tremendous recent advances in light-matter interactions and applications. Nonlinear optical processes that produce electric currents, for example bulk photovoltaic (BPV) effect, require inversion symmetry broken materials, such as ferroelectrics. In the current work, we demonstrate that such BPV current could be generated in centrosymmetric materials with excitation of out-of-equilibrium coherent phonons. This is much different from the generally studied static or thermally excited states. We show that depending on the oscillating phase factor of the coherent phonon, uni-directional static electric current can be observed, in addition to some terahertz alternating currents. We also generalize the conventional injection charge current into angular momentum (spin and orbital) degrees of freedom, and demonstrate spin and orbital BPV photocurrents under coherent phonons. Our findings open the pathway to exploring the exotic phonon-photon-electron coherent interactions in quantum materials.
description: Under peer review, 5 figures
Frequency characteristics analysis of power system under determined new energy penetration rate considering different start-up methods and frequency modulation participation degree
Creators: name: Ye, Lin
name: Yang, Xiaolei
name: Zhang, Yeli
name: Hua, Wen
name: Wu, Donghao
Publisher: name: Taylor & Francis
Year: 2025
Subjects: Biological Sciences not elsewhere classified
Science Policy

description: The current research paradigm for the frequency stability analysis of power systems is generally based on exploring the conditions of different new energy penetration rates. There is a lack of deep theoretical analysis on the frequency characteristics of power systems under the determined new energy penetration rate conditions. Under the determined new energy penetration rate, factors such as the start-up methods and frequency modulation depth of the power supply can also significantly affect the frequency characteristics. Based on the above, this study explores the problem of frequency characteristics analysis of power systems under determined new energy penetration rates considering different start-up methods and frequency modulation participation degrees. By calculating and analyzing the different system equivalent inertia formed by the heterogeneous power supply with different frequency modulation participation degrees and start-up methods/operation conditions, we discover the analytic solution and influence regularity of the frequency response under the condition of the determined new energy penetration rate. Finally, an arithmetic system was used to verify the correctness of the calculation method used in this study.
October - Sensing and Monitoring
Creators: Mohamed Ali
Ahmed Ali A. Mohamed
and Tanvir Rahman
Sourabh Ghosh
Navneet Kumar Singh
Asheesh Kumar Singh
and Sri Niwas Singh
Mayank Panwar
Rob Hovsapian
Manish Mohanpurkar
and Clay Koplin
Marta Vanin and Dirk Van Hertem
Publisher: name: IEEE
Year: 2022

Bulletin
An issue of the Smart Grid Bulletin on Sensing and Monitoring featuring "Key Technical Challenges Facing Wide-Scale Deployment of Distributed Generation and Renewables � Is DERMS the Answer? or it is a Solution that Needs Another Solution?", "Digital Twin for Electric Energy Systems: A New Era of Digitization", "Real Time Digital Twin for an Alaskan Microgrid using SCADA, Distribution PMUs, and Smart Meter Data", and "The role of state estimation in the improvement of low voltage distribution network models"
Structural and decay properties of nuclei appearing in the $α$-decay chains of $^{296,298,300,302,304}$120 within the relativistic mean-field formalism
Creators: name: Biswal, N.
name: Jain, Nishu
name: Kumar, Raj
name: Pradeep, A. S.
name: Bhuyan, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: An extensive study of $α$-decay half-lives for various decay chains of isotopes of $Z$ = 120 is performed within the axially deformed relativistic mean-field (RMF) formalism by employing the NL3, NL3$^*$, and DD-ME2 parameter set. The structural properties of the nuclei appearing in the decay chains are explored. The binding energy, quadrupole deformation parameter, root-mean-square charge radius, and pairing energy are calculated for the even-even isotopes of $Z$ = 100 $-$ 120, which are produced in five different $α$-decay chains, namely, $^{296}$120 $\rightarrow$ $^{260}$No, $^{298}$120 $\rightarrow$ $^{262}$No, $^{300}$120 $\rightarrow$ $^{264}$No, $^{302}$120 $\rightarrow$ $^{266}$No, and $^{304}$120 $\rightarrow$ $^{268}$No. A superdeformed prolate ground state is observed for the heavier nuclei, and gradually the deformation decreases towards the lighter nuclei in the considered decay chains. The RMF results are compared with various theoretical predictions and experimental data. The $α$-decay energies are calculated for each decay chain. To determine the relative numerical dependency of the half-life for a specific $α$-decay energy, the decay half-lives are calculated using four different formulas, namely, Viola-Seaborg, Alex-Brown, Parkhomenko-Sobiczewski, and Royer for the above said five $α$-decay chain. We notice a firm dependency of the half-life on the $α$-decay formula in terms of $Q_α$-values for all decay chains. Further, the present study also strengthens the prediction for the island of stability in terms of magic number at the superheavy valley in the laboratories.
Addendum to "Ricci-flat holonomy: a Classification": the case of Spin(10)
Creators: name: Armstrong, Stuart
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 53B05

description: This note fills a hole in the author's previous paper ``Ricci-Flat Holonomy: a Classification'', by dealing with irreducible holonomy algebras that are subalgebras or real forms of $\mbb{C} \oplus \mf{spin}(10,\mbb{C})$. These all turn out to be of Ricci-type.
description: Corrections to a previous paper
Theory of correlated insulators and superconductivity in twisted bilayer graphene
Creators: name: Shavit, Gal
name: Berg, Erez
name: Stern, Ady
name: Oreg, Yuval
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We introduce and analyze a model that sheds light on the interplay between correlated insulating states, superconductivity, and flavor-symmetry breaking in magic angle twisted bilayer graphene. Using a variational mean-field theory, we determine the normal-state phase diagram of our model as a function of the band filling. The model features robust insulators at even integer fillings, occasional weaker insulators at odd integer fillings, and a pattern of flavor-symmetry breaking at non-integer fillings. Adding a phonon-mediated inter-valley retarded attractive interaction, we obtain strong-coupling superconducting domes, whose structure is in qualitative agreement with experiments. Our model elucidates how the intricate form of the interactions and the particle-hole asymmetry of the electronic structure determine the phase diagram. It also explains how subtle differences between devices may lead to the different behaviors observed experimentally. A similar model can be applied with minor modifications to other moiré systems, such as twisted trilayer graphene.
description: Published version
Fertilization of western hemlock with nitrogen, phosphorus, and lime : a greenhouse study
Creators: name: Newsome, Teresa Hardie
Publisher: name: University of British Columbia
Year: 2010

description: Western hemlock seedlings were grown for 8 months in a greenhouse with fertilizer amendments of N, P, N+P, and lime. Humus material was used as a growth medium. It was collected from low-productive sites identified by Lewis (1985) as the cedar-hemlock phase of the Thuja plicata - Tsuga heterophylla - Gautheria shallon - Rhytidiadelphusloreus ecosystem association unit designated as S1CH , on his ecosystem maps of Tree Farm Licences 6 and 25, which are located on northern Vancouver Island. A combination of 100 kg/ha N and 150 kg/ha P produced the most favourable seedling growth and foliar nutrient status. N or P added separately at these rates also gave superior seedling growth compared to the control. Neither lime, nor high rates of N (at 300 kg/ha with or without P) increased seedling growth. High N additions also restricted root development. N fertilization reduced foliar P concentrations, and P addition decreased foliar N concentrations. Foliar Mg concentrations increased when P fertilizers were added. N and/or P additions caused a decrease in foliar B concentrations. A combination of N and P increased foliar Zn concentrations and S, but reduced Mn absorption. Foliar R was inversely related to seedling productivity. Management recommendations for the S1CH sites include fertilizing with P, and increasing available N either by cultivation to increase mineralization or by low rates of N fertilization