cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Thirty Years of heavy Fermions: Scientific Setting for their Discovery and Partial Understanding
Creators: name: Varma, C. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Heavy-Fermions provide an extreme example of the utility of the idea of continuity and analyticity in physics. Their discovery and study in the past thirty years has added a fascinating chapter to condensed matter physics. I briefly review the origins of the heavy-fermion problem out of the study of magnetic moments in metals and the study of mixed-valent rare-earth compounds. I also review the principal ideas underlying the features understood in their fermi-liquid phase as well as in their anisotropic superconductivity. The unsolved issues are also briefly mentioned.
description: This is the text of one of the talks given at the plenary symposium entitled "Thirty years of heavy Fermions" at the beginning of the International conference on Strongly correlated Electrons in Vienna in July 2005
Dirac Action on M5 and M2 Branes with Bulk Fluxes
Creators: name: Kallosh, Renata
name: Sorokin, Dmitri
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive an explicit form of the quadratic in fermions Dirac action on the M5 brane for an arbitrary on-shell background of 11D supergravity with non-vanishing fluxes and in presence of a chiral 2-form on M5. This action may be used to generalize the conditions for which the non-perturbative superpotential can be generated in M/string theory. We also derive the Dirac action with bulk fluxes on the M2 brane.
description: 12 pages References added
StoryGuess
Creators: name: Boschi, Carlotta
name: Bartolini, Lorenzo
name: Consoli, Noemi
name: Dal Torrione, Andrea
Publisher: name: Zenodo
Year: 2024

description: StoryGuess

Autori/Designers:

Lorenzo Bartolini, Università degli Studi di Firenze

Carlotta Boschi, Università degli Studi di Firenze

Noemi Consoli, Università degli Studi di Firenze

Andrea Dal Torrione, Università degli Studi di Firenze

 

StoryGuess è uno strumento innovativo utile durante le fasi iniziali di progettazione. Il nome stesso evoca l’emozione di indovinare e partecipare attivamente alla narrazione. Le stazioni del gioco, ognuna con una forma e un tema diversi, portano l’utente a indovinare e allo stesso tempo creare la storia. In ogni stazione troviamo indizi testuali, fotografici e sensoriali, che l’utente può scegliere liberamente.
THE APPLICATION OF SIMULATION TECHNIQUES TO THE STUDY OF GRAZING SYSTEMS
Creators: name: Wright, A.
name: Dent, J. Barry
name: Wright, A.
name: Dent, J. Barry
Publisher: name: Unknown
Year: 1969
Subjects: Livestock Production/Industries

description: Decision making studies in agriculture are often made difficult by the complex and dynamic nature of bio-economic systems. Simulation is one of the newer systems research techniques which as yet has had limited use in farm management research. This paper discusses some methodological aspects of simulation with specific reference to grazing systems. Problems arising in the development and use of simulation models are discussed and the need for inter-disciplinary co-operation to overcome data problems is indicated. One approach to experimentation is illustrated by reference to a model of a sheep grazing system and the problem of cropping for winter grazing. It is concluded that simulation is a potentially useful technique for management-oriented systems research in agriculture.
THE DEMAND FOR IRRIGATION WATER IN AN INTENSIVE IRRIGATION AREA
Creators: name: Flinn, John C.
name: Flinn, John C.
Publisher: name: Unknown
Year: 1969
Subjects: Resource /Energy Economics and Policy

description: Linear programming procedures offer a useful means of estimating irrigation water demand functions at the farm level. If such estimates are to be aggregated to form regional demand schedules, care must be taken in the selection of representative farms if aggregation error is to be minimized. Both seasonal and intra-seasonal demand schedules are presented since both are important when irrigation demand estimates are being developed.
The R-Process Alliance: The Peculiar Chemical Abundance Pattern of RAVE J183013.5-455510
Creators: name: Placco, Vinicius M.
name: Santucci, Rafael M.
name: Yuan, Zhen
name: Mardini, Mohammad K.
name: Holmbeck, Erika M.
name: Wang, Xilu
name: Surman, Rebecca
name: Hansen, Terese T.
name: Roederer, Ian U.
name: Beers, Timothy C.
name: Choplin, Arthur
name: Ji, Alexander P.
name: Ezzeddine, Rana
name: Frebel, Anna
name: Sakari, Charli M.
name: Whitten, Devin D.
name: Zepeda, Joseph
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report on the spectroscopic analysis of RAVE J183013.5-455510, an extremely metal-poor star, highly enhanced in CNO, and with discernible contributions from the rapid neutron-capture process. There is no evidence of binarity for this object. At [Fe/H]=-3.57, this is one of the lowest metallicity stars currently observed, with 18 measured abundances of neutron-capture elements. The presence of Ba, La, and Ce abundances above the Solar System r-process predictions suggest that there must have been a non-standard source of r-process elements operating at such low metallicities. One plausible explanation is that this enhancement originates from material ejected at unusually fast velocities in a neutron star merger event. We also explore the possibility that the neutron-capture elements were produced during the evolution and explosion of a rotating massive star. In addition, based on comparisons with yields from zero-metallicity faint supernova, we speculate that RAVE J1830-4555 was formed from a gas cloud pre-enriched by both progenitor types. From analysis based on Gaia DR2 measurements, we show that this star has orbital properties similar to the Galactic metal-weak thick-disk stellar population.
description: Accepted for publication in ApJ
Berkeley IGS Poll: Tabulations from an April 2020 Survey of California Registered Voters about COVID-19 and Farmworkers
Creators: name: Berkeley Institute Of Governmental Studies, University Of California
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Coronavirus (COVID-19) outbreak in California (1); Donald Trump handling his job (1); vote in the November 2020 general election (1); Donald Trump vs. Joe Biden (1); Gavin Newsom handling his job as Governor of California (1); concern about coronavirus (10); problems that you expect as a result of COVID-19 (10); tested for COVID-19 (4); work from home (1); preventing a person from getting COVID-19 (8); personal protective equipment (PPE) (1); Medicare-for-all (1); COVID-19 pandemic affected your finances (1); provide accurate information about COVID-19 (12); President Trump refer to COVID-19 as the "Chinese virus" (1); access to COVID-19 test (1); covid challenges for farmworkers and the agricultural industry (4); COVID-19 impacts black people more than other groups (1); COVID-19 is increasing inequality in the United States (1); COVID-19 pandemic and shortage of tests and medical supplies (9); trust in the federal government in responding to the COVID-19 pandemic (1); pathway to citizenship for immigrants (1); nationwide shelter-in-place to combat coronavirus (1); health insurance coverage (1); employment industry (1); personal finances (1); political party preference (1).
Microorganisms and deterioration of artistic and historical substrate of cultural heritage
Creators: name: Mohammadi, Parisa
name: Aliasghari, Azam
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Antiquities and monuments are represents of the culture, civilization and historical background of a country and can be very effective in economic growth and development of countries. It is very important to protect these monuments and if not to be noticed, will be causes serious and irreversible destruction. In recent years, chemical and physical factors also biological factors are introduced as very important and effective factors in biodeterioration. The issue of biodeterioration is one of the problems that cultural heritage always faced to it. Biodeterioration is an irreversible damage caused by microorganisms against archaeological sites. This worldwide problem, resulting to the physical and chemical damage in historical/ archaeological substrates and artworks. The role of various microorganisms has been proven in the erosion of a variety of artistic and historical substrate, including paintings, stone works, ceramics, paper documents and books, wood, textiles and films. The first step in controlling microbial deterioration of monuments is to identify deteriorating microorganisms and to know their mechanisms in the deterioration of archaeological substrates and artworks. This subject provides a valuable information for restorators and researchers in choosing the most appropriate methods for the prevention, control and treatment of damage on substrates. This article is an overview to introduce the most important microorganisms and to know their mechanisms of microbial deterioration of various historical and artistic substrates.
Galaxy Cluster Masses Without Non-Baryonic Dark Matter
Creators: name: Brownstein, J. R.
name: Moffat, J. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We apply the modified acceleration law obtained from Einstein gravity coupled to a massive skew symmetric field, F_{μνλ}, to the problem of explaining X-ray galaxy cluster masses without exotic dark matter. Utilizing X-ray observations to fit the gas mass profile and temperature profile of the hot intracluster medium (ICM) with King beta-models, we show that the dynamical masses of the galaxy clusters resulting from our modified acceleration law fit the cluster gas masses for our sample of 106 clusters without the need of introducing a non-baryonic dark matter component. We are further able to show for our sample of 106 clusters that the distribution of gas in the ICM as a function of radial distance is well fit by the dynamical mass distribution arising from our modified acceleration law without any additional dark matter component. In previous work, we applied this theory to galaxy rotation curves and demonstrated good fits to our sample of 101 LSB, HSB and dwarf galaxies including 58 galaxies that were fit photometrically with the single parameter (M/L)_{stars}. The results there were qualitatively similar to those obtained using Milgrom's phenomenological MOND model, although the determined galaxy masses were quantitatively different and MOND does not show a return to Keplerian behavior at extragalactic distances. The results here are compared to those obtained using Milgrom's phenomenological MOND model which does not fit the X-ray galaxy cluster masses unless an auxiliary dark matter component is included.
description: Submitted to MNRAS, July 8, 2005. 16 pages, 2 figures, 1 table, 106 galaxy clusters
30. The motion of globular clusters
Creators: name: Perryman, Michael
Publisher: name: Zenodo
Year: 2021

description: The space motions of globular clusters and dwarf spheroidal galaxies depend on our Galaxy's gravitational potential, and therefore its mass distribution. Together with knowledge of their chemistry and ages, these provide strong constraints on theories of formation of our Galaxy, including when and how the halo and disk actually formed.
Faint emission lines in the Galactic H II regions M16, M20 and NGC 3603
Creators: name: Garcia-Rojas, J.
name: Esteban, C.
name: Peimbert, M.
name: Costado, M. T.
name: Rodriguez, M.
name: Peimbert, A.
name: Ruiz, M. T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present deep echelle spectrophotometry of the Galactic {\hii} regions M16, M20 and NGC 3603. The data have been taken with the Very Large Telescope Ultraviolet-Visual Echelle Spectrograph in the 3100 to 10400 Årange. We have detected more than 200 emission lines in each region. Physical conditions have been derived using different continuum and line intensity ratios. We have derived He$^{+}$, C$^{++}$ and O$^{++}$ abundances from pure recombination lines as well as abundances from collisionally excited lines for a large number of ions of different elements. We have obtained consistent estimations of the temperature fluctuation parameter, {\ts}, using different methods. We also report the detection of deuterium Balmer lines up to D$δ$ (M16) and to D$γ$ (M20) in the blue wings of the hydrogen lines, which excitation mechanism seems to be continuum fluorescence. The temperature fluctuations paradigm agree with the results obtained from optical CELs and the more uncertain ones from far IR fine structure CELs in NGC 3603, although, more observations covering the same volume of the nebula are necessary to obtain solid conclusions.
description: 22 pages, 13 Tables, 7 Figures. Accepted for publication by MNRAS
Electrochemical and spectroelectrochemical characterization of the adsorption of octadecanol on Au(111)
Creators: name: Yang, Yanguo
Publisher: name: University of British Columbia
Year: 2009

description: An in-situ elastically scattered light setup has been developed and combined with electrochemical techniques to investigate the potential dependent adsorption/desorption of octadecanol onto/from Au(lll) electrode surface. Octadecanol has been found to adsorb on the electrode surface at potentials close to the potential of zero charge and desorb at more negative potentials. The concentration of the supporting electrolyte solution has been found to have a significant influence on the adsorption/desorption process. The potential-induced phase transitions shown as peaks in the CV's and capacitance measurements are shifted in the negative direction by about 100 mV as the electrolyte concentration decreases from 100 mM to 5 mM. A thermodynamically stable aggregated form is postulated to exist when the surfactant molecules are desorbed from the electrode surface. The changes in the optical measurement, used to measure the characteristics of the desorbed species, or aggregates, were also found to be affected similarly. An intermediate adsorbed state (adsorbed aggregate) has been found to exist during the adsorption/desorption process. Electrolyte concentration most strongly affects the stability and form of the intermediate state. The elastically scattered light signal for the intermediate adsorbed state was more prevalent for higher electrolyte concentration. The lower electrolyte concentration displayed a larger potential region where this intermediate adsorbed state was stable, but the intensity of the elastically scattered light was much lower. Detailed analysis of the elastically scattered light signal and electrochemical responses makes us believe that the pre-desorption configurations in different electrolyte concentrations are quite different, implying a different conformation or structure of the aggregates. Under certain simplifying conditions, this implies that the average size of the predesorption state is larger for the higher electrolyte concentration. Potential sweep rate also has an influence on the scattering characteristics of the desorbed species, suggesting a possible method for measuring the kinetics of the adsorption/desorption process, or for controlling the character of the desorbed species. These changes were explained in terms of mechanism for the wetting or de-wetting of a solid surface by an organic phase. The influence of electrolyte concentration provides another opportunity for investigating the dynamics of this adsorption/desorption process.
Formation of compact galaxies in the Extreme-Horizon simulation
Creators: name: Chabanier, Solène
name: Bournaud, Frédéric
name: Dubois, Yohan
name: Codis, Sandrine
name: Chapon, Damien
name: Elbaz, David
name: Pichon, Christophe
name: Bressand, Olivier
name: Devriendt, Julien
name: Gavazzi, Raphael
name: Kraljic, Katarina
name: Kimm, Taysun
name: Laigle, Clotilde
name: Lekien, Jean-Baptiste
name: Martin, Garreth
name: Palanque-Delabrouille, Nathalie
name: Peirani, Sébastien
name: Piserchia, Pierre-Franck
name: Slyz, Adrianne
name: Trebitsch, Maxime
name: Yèche, Christophe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the Extreme-Horizon (EH) cosmological simulation: EH models galaxy formation with stellar and AGN feedback and uses a very high resolution in the intergalactic and circumgalactic medium. The high resolution in low-density regions results in smaller-size massive galaxies at redshift $z=2$, in better agreement with observations compared to other simulations. This results from the improved modeling of cold gas flows accreting onto galaxies. Besides, the EH simulation forms a population of particularly compact galaxies with stellar masses of $10^{10-11}$\,M$_\sun$ that are reminiscent of observed ultracompact galaxies at $z\simeq2$. These objects form mainly through repeated major mergers of low-mass progenitors, independently of baryonic feedback mechanisms. This formation process can be missed in simulations using a too low resolution in low-density intergalactic regions.
description: Submitted to A&A Link to a projection of the simulation at z = 2 in high definition: http://www.galactica-simulations.eu/EH_L50/index.html
A Possible Late Time $Λ$CDM-like Background Cosmology in Relativistic MOND Theory
Creators: name: Hao, J. G.
name: Akhoury, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the framework of Relativistic MOND theory (TeVeS), we show that a late time background $Λ$CDM cosmology can be attained by choosing a specific $F(μ)$ that also meets the requirement for the existence of Newtonian and MOND limits. We investigate the dynamics of the scalar field $ϕ$ under our chosen $F(μ)$ and show that the "slow roll" regime of $ϕ$ corresponds to a dynamical attractor, where the whole system reduces to $Λ$CDM cosmology.
description: Major revisions made; Matching the version to be published in IJMPD
STRESS ON PRODUCTION ECONOMICS
Creators: name: Johnson, Glenn L.
name: Johnson, Glenn L.
Publisher: name: Unknown
Year: 1963
Subjects: Production Economics

description: This article was written at the invitation of the Editor of this journal. In earlier correspondence the point was made that the author had been "having second thoughts on the decline of some departments of agricultural economics which were of a more applied nature" and that "this year will mark a decade since the emergence of Earl Heady's massive tome", Economics of Agricultural Production and Resource Use, Prentice-Hall, Inc. New Jersey, 1952. The suggestion was made to the author "that perhaps you could review developments in the field of production economics since the birth of the Heady opus". Preferably, the article should be viewed as critical of certain developments in our profession, the origins of which extend back in history prior to the lives of any living person and horizontally in our society beyond the realms of production economics and, for that matter, far beyond the social science disciplines. The need is for criticism of a development and not for criticism of the people who participated in the development.
Finite-Volume Effects for Two-Hadron States in Moving Frames
Creators: name: Kim, C. h.
name: Sachrajda, C. T.
name: Sharpe, Stephen R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We determine the finite-volume corrections to the spectrum and matrix elements of two-hadron states in a moving frame, i.e. one in which the total momentum of the two-hadrons is non-zero. The analysis is performed entirely within field theory and the results are accurate up to exponential corrections in the volume. Our results for the spectrum are equivalent to those of Rummukainen and Gottlieb which had been obtained using a relativistic quantum mechanical approach. A technical step in our analysis is a simple derivation of the summation formulae relating the loop summations over the momenta of the two hadrons in finite volume to the corresponding integrals in infinite volume.
description: 29 pages, 2 figures
Plator yunlong Zhu, Tang, Zhang & Song, 2006, sp. nov.
Creators: name: Zhu, Ming-Sheng
name: Tang, Gui-Ming
name: Zhang, Feng
name: Song, Da-Xiang
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Trochanteriidae
Plator
Plator yunlong

description: Plator yunlong sp. nov. (Figs 31 –35, 46) Type material Holotype female, CHINA: Yunnan Province, Yunlong County, N 25 ° 54 ’, E 99 ° 22 ’, 6 October 2001, Er­Bing Yang leg. Paratype: 1 male, same data as holotype. (MHBU). Diagnosis This species can be easily distinguished from other species of this genus by female with epigynal margins laterally, large and C­shaped, the shadows of spermathecae almost butterfly­like, copulatory ducts relatively long, parallel to each other (Figs 32, 33); median apophysis of male pedipalpus oval, and with a prong near tip of its anterior edge in ventral view (Fig. 34). Etymology The specific name is a noun in apposition taken from the type locality. Description Female (holotype): Total length 10.35. Carapace 3.51 long, 5.31 wide; opisthosoma 6.93 long, 6.48 wide. Carapace yellow brown, with hairs and setae as P. pennatus. All eyes circular. Anterior eye row slight recuved, poeterior eye row recurved (Fig. 31). Eye diameters: AME 0.15, ALE 0.13, PME 0.13, PLE 0.18. Distances between eyes: AME –AME 0.13, AME–ALE 0.18, PME–PME 0.27, PME–PLE 0.43. MOA 0.43 long, front width 0.43, back width 0.53. Chelicerae light red brown, both promarginal and retromarginal with three teeth. Clypeus, endites and sternum light yellow brown, sternum margins brown. Leg formula 2341. Leg measurements of Plator yunlong sp. nov., female. Opisthosoma oval. Dorsum pale yellow, with small paddle hairs and sparse dark setae bearing spinules, posterior half and sides with small irregular black spots. Six spinnerets. Epigynum laterally with strongly sclerotized, C­shaped margins, and a median butterflylike shadow of spermathecae, copulatory ducts relatively long and parallel to each other (Figs 32–33). Male total length 6.84. Carapace 2.79 long, 4.14 wide; opisthosoma 4.23 long, 4.14 wide. Eye diameters: AME 0.13, ALE 0.10, PME 0.13, PLE 0.18. Distances between eyes: AME–AME 0.09, AME–ALE 0.10, PME–PME 0.19, PME–PLE 0.28. MOA 0.38 long, front width 0.35, back width 0.45. Appearance of body and legs as females. Retrolateral tibial apophysis of pedipalpus short, directed forward. Median apophysis oval, erect, with a prong near tip of its anterior edge in ventral view (Figs 34–35). Distribution Southeast China (Yunnan). Biology Living in crevices of old tiles and under bark of pine trees.
description: Published as part of Zhu, Ming-Sheng, Tang, Gui-Ming, Zhang, Feng & Song, Da-Xiang, 2006, Revision of the spider family Trochanteriidae from China (Araneae: Gnaphosoidea), pp. 31-51 in Zootaxa 1140 (1) on pages 46-49, DOI: 10.11646/zootaxa.1140.1.2, http://zenodo.org/record/172053
The Kaon B-parameter in quenched QCD
Creators: name: Sint, Stefan
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I report on a recent determination by the ALPHA collaboration of the kaon B-parameter using lattice QCD with Wilson type quarks. An effort is made to control all systematic errors except for the quenched approximation. The preliminary result for the renormalization group invariant parameter is $\hat{B}_K = 0.834(37)$, which translates to $B_K^MSbar(2 GeV)=0.604(27)$ in the MSbar scheme with anticommuting $γ_5$.
description: 4 pages, parallel talk at International Conference on QCD and Hadronic Physics, Beijing, June 2005
ON MARKETING QUOTAS FOR FLUID MILK
Creators: name: Parish, Ross M.
name: Parish, Ross M.
Publisher: name: Unknown
Year: 1963
Subjects: subject: Marketing
subject: FOS: Economics and business

description: In this article I present a static economic analysis of the operation of milk marketing schemes (such as that administered by the New South Wales Milk Board) which employ marketing quotas for individual producers. This is a subject which has already received some attention in this Journal: I refer to the suggestion of Harris and Candler that marketing quotas for fluid milk should be freely traded among producers, and, more particularly, to Neutze's subsequent discussion of their proposal. Some of the problems raised, and apparent paradoxes uncovered in that discussion, will be considered in the second part of this article.
Phase shifted $\mathcal{PT}$-symmetric periodic structures
Creators: name: Raja, S. Vignesh
name: Govindarajan, A.
name: Mahalingam, A.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We report the spectral features of a phase-shifted parity and time ($\mathcal{PT}$)-symmetric fiber Bragg grating (PPTFBG) and demonstrate its functionality as a demultiplexer in the unbroken $\mathcal{PT}$-symmetric regime. The length of the proposed system is of the order of millimeters and the lasing spectra in the broken $\mathcal{PT}$-symmetric regime can be easily tuned in terms of intensity, bandwidth and wavelength by varying the magnitude of the phase shift in the middle of the structure. Surprisingly, the multi-modal lasing spectra are suppressed by virtue of judiciously selected phase and the gain-loss value. Also, it is possible to obtain sidelobe-less spectra in the broken $\mathcal{PT}$-symmetric regime, without a need for an apodization profile, which is a traditional way to tame the unwanted sidelobes. The system is found to show narrow band single-mode lasing behavior for a wide range of phase shift values for given values of gain and loss. Moreover, we report the intensity tunable reflection and transmission characteristics in the unbroken regime via variation in gain and loss. At the exceptional point, the system shows unidirectional wave transport phenomenon independent of the presence of phase shift in the middle of the grating. For the right light incidence direction, the system exhibits zero reflection wavelengths within the stopband at the exceptional point. We also investigate the role of multiple phase shifts placed at fixed locations along the length of the FBG and the variations in the spectra when the phase shift and gain-loss values are tuned. In the broken $\mathcal{PT}$-symmetric regime, the presence of multiple phase shifts aids in controlling the number of reflectivity peaks besides controlling their magnitude.
description: To appear in Phys. Rev. A
Self-adjoint extensions and SUSY breaking in Supersymmetric Quantum Mechanics
Creators: name: Falomir, H.
name: Pisani, P. A. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the self-adjoint extensions (SAE) of the symmetric supercharges and Hamiltonian for a model of SUSY Quantum Mechanics in $\mathbb{R}^+$ with a singular superpotential. We show that only for two particular SAE, whose domains are scale invariant, the algebra of N=2 SUSY is realized, one with manifest SUSY and the other with spontaneously broken SUSY. Otherwise, only the N=1 SUSY algebra is obtained, with spontaneously broken SUSY and non degenerate energy spectrum.
description: LaTeX. 23 pages and 1 figure (minor changes). Version to appear in the Journal of Physics A: Mat. and Gen
Microplastics in a Marine Environment: Review of Methods for Sampling, Processing, and Analyzing Microplastics in Water, Bottom Sediments, and Coastal Deposits.
Creators: name: Zobkov, M. B.
name: Esiukova, E. E.
Publisher: name: UNESCO/IOC
Year: 2018
Subjects: subject: Plankton
subject: Parameter Discipline::Environment::Anthropogenic contamination

description: The basic approaches, methods, and procedures for collecting and analyzing samples of microplastics in a marine environment are briefly described.
Middle Tennessee State University Poll: Spring 2017 MTSU Poll
Creators: name: Middle Tennessee State University
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Voting in 2016 presidential election (4); former President Barack Obama job performance (1); President Donald Trump job performance (1); Congress job performance (1); Senator Bill Haslam job performance (1); Tennessee State Legislature job performance (1); Senator Bob Corker job performance (1); Senator Lamar Alexander job performance (1); 2018 election for governor (1); immigrants (2); abortion (2); popular vote in 2016 presidential election (1); 2010 health care law (3); gasoline tax (2); gun control (1); seat belts on school buses (1); school vouchers (2); standardized testing (1); sources of news (6); political knowledge (5).
Rotating vortices in two-dimensional inhomogeneous strongly coupled dusty plasmas: shear and spiral-density waves
Creators: name: Dharodi, Vikram S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Dusty plasma experiments can be performed quite easily in strong coupling regime. In our previous work [Phys. Plasmas 21, 073705 (2014)], we numerically explored such plasmas with constant density and observed the transverse shear (TS) waves from a rotating vortex. Laboratory dusty plasmas are good examples of homogeneous plasmas however heterogeneity (e.g. density, temperature, charge) may be due to the existence of voids, different domains with different orientations, presence of external forces like magnetic and/or electric, size/charge imbalance, etc. Here, we examine how the density heterogeneity in dusty plasmas responds to the circularly rotating vortex monopoles, namely smooth and sharp cut-off. For this purpose we have carried out a series of two-dimensional viscoelastic fluid simulations in the framework of generalized hydrodynamics (GHD) fluid model. The rotating vortices are placed at the interface of two incompressible fluids with different densities. The smooth rotating vortex causes two things: First, the densities are stretched to form the spiral density waves; secondly, the TS waves propagate radially into the surrounding media according to the shear wave speed. We notice that the spiral density arms are distinguishable in the early time while later get smeared out. The sharp rotating vortex creates sharp shear flows which in turn favor the Kelvin-Helmholtz (KH) instability across the interfaces. In such flows for the GHD system, the interplay between the emitted TS waves and the vortices of KH instability distorts the formation of the regular spiral density arms around the rotor
Middle Tennessee State University Poll: Spring 2016 MTSU Poll
Creators: name: Middle Tennessee State University
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: 2016 presidential election (10); President Barack Obama job performance (1); Congress job performance (1); Governor Bill Haslam job performance (1); Tennessee State Legislature job performance (1); Senator Bob Corker job performance (1); Senator Lamar Alexander job performance (1); personal financial situation (2); gun control (2); abortion (2); Syrian refugees (1); gasoline taxes (1); political knowledge (5); media use (3).
du Mont, Etienne, La Situation du Protestant baptisé et de bonne foi par rapport à l'unique Eglise du Christ
Creators: name: Pfisterer, Rudolf
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 11 Nr. 3 (1962): Ökumenische Rundschau, Band 11, Heft 3
The [Fe IV] Discrepancy: Constraining the Iron Abundances in Nebulae
Creators: name: Rodriguez, Monica
name: Rubin, Robert H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the current discrepancy between the model-predicted and measured concentrations of Fe++ and Fe3+ in ionized nebulae. We calculate a set of photoionization models, updated with the atomic data relevant to the problem, and compare their results with those derived for the available nebulae where both [Fe III] and [Fe IV] lines have been measured. Our new model results are closer to the measured values than the results of previous calculations, but a discrepancy remains. This discrepancy translates into an uncertainty in the derived Fe abundances of a factor up to ~4. We explore the possible causes of this discrepancy and find that errors in the Fe atomic data may be the most likely explanation. The discrepancy can be fully accounted for by any of the following changes: (1) an increase by a factor of ~10 in the recombination rate (radiative plus dielectronic, or charge transfer) for Fe3+, (2) an increase by a factor of 2-3 in the effective collision strengths for Fe++, or (3) a decrease by a factor of 2-3 in the effective collision strengths for Fe3+. We derive the Fe abundances implied by these three explanations and use the results to constrain the degree of depletion of Fe in our sample nebulae. The Galactic H II regions and planetary nebulae are found to have high depletion factors, with less than 5% of their Fe atoms in the gas phase. The extragalactic H II regions (LMC 30 Doradus, SMC N88A, and SBS 0335-052) have somewhat lower depletions. The metal-deficient blue compact galaxy SBS 0335-052 could have from 13% to 40% of Fe in the gas phase. The depletions derived for the different objects define a trend of increasing depletion at higher metallicities.
description: 23 pages, 7 figures, accepted for publication in ApJ, Figure 5 corrected
Middle Tennessee State University Poll: Fall 2016 MTSU Poll
Creators: name: Middle Tennessee State University
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Voting (2); 2016 presidential election (8); Hillary Clinton (3); Donald Trump (3); President Barack Obama job performance (1); Congress job performance (1); Governor Bill Haslam job performance (1); Tennessee State Legislature job performance (1); Senator Bob Corker job performance (1); Senator Lamar Alexander job performance (1); political knowledge (5); media use (3).
Size effects and idealized dislocation microstructure at small scales: predictions of a phenomenological model of Mesoscopic Field Dislocation Mechanics: Part I
Creators: name: Acharya, Amit
name: Roy, Anish
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A Phenomenological Mesoscopic Field Dislocation Mechanics (PMFDM) model is developed, extending continuum plasticity theory for studying initial-boundary value problems of small-scale plasticity. PMFDM results from an elementary space-time averaging of the equations of Field Dislocation Mechanics (FDM), followed by a closure assumption from any strain-gradient plasticity model that attempts to model effects of geometrically-necessary dislocations (GND) only in work-hardening.
Integration of the Americas: Labour Mobility between Canada and the United States
Creators: name: Soto, Maritza
name: Soto, Maritza
Publisher: name: Unknown
Year: 2002
Subjects: International Relations/Trade

description: To promote trade in goods and services, chapter 16 of the North American Free Trade Agreement (NAFTA) facilitates the cross-border movement of businesspersons. This has allowed managers, technical experts and others to relocate in order to expedite production and support the increased trade that has followed trade liberalization. Since an overwhelming bulk of international trade is carried out by multinational companies, foreign direct investment theory suggests that there will be increased free trade between Canada and the United States to the extent that it encourages increased intra-industry trade and investment and is expected to increase economic incentives for labour mobility. This paper discusses the relationships among various factors of trade liberalization and their impacts on labour mobility between the Canada and the United States. It considers if and how the NAFTA may have affected bilateral flows of permanent and nonpermanent immigrants between the two countries. It also examines these effects in relation to future trade agreements such as the Free Trade Area of the Americas (FTAA).
An investigation of the electrophilic active site of histidine and phenylalanine ammonia-lyase
Creators: name: Galpin, Jason D.
Publisher: name: University of British Columbia
Year: 2009

description: Histidine ammonia-lyase from Pseudomonas putida (hutH, EC 4.3.1.3) contains a unique active site electrophile that forms autocatalytically via a dehydrating backbone cyclization of the three amino acids alanine 142, serine 143 and glycine 144 and a second dehydration of the serine 143 side chain. The electrophile is a 4-methylidene-imidazole-5-one (MIO) that, following enzyme inactivation in the presence of cysteine and oxygen at pH 10.5, has been isolated as a component of a chromophoric octapeptide. The modified MIO is found to be an oxidized adduct of cysteine to which another cysteine or P-mercaptoethanol is linked through a disulfide bridge. One and twodimensional NMR experiments as well as high-resolution mass and UV absorbance spectra indicate that each MIO-containing octapeptide consists of at least three interconverting isomers, with a covalent linkage between the exocyclic MIO methylidene carbon and the amine of cysteine. This information and data from inactivation studies employing analogues of cysteine lacking an amino functionality suggest an inactivation mechanism that strongly supports the Retey mechanism of HAL with histidine. It is likely that the closely related enzyme phenylalanine ammonia-lyase (PAL, EC 4.3.1.3) shares this mechanism. A fluorine-containing analogue of L-phenylalanine, erythro 3-fluorophenylalanine, was synthesized and was found to act as a competitive inhibition of PAL from poplar, with a Ki value of 45±5 µM. This is significantly smaller than the Km value of 250 µM for L-phenylalanine, indicating that erythro 3-fluorophenylalanine is a reasonably good competitive inhibitor of PAL. A variety of analogues of L-histidine were synthesized, including (S)-2-halo-3-(imidazol-4- yl) propionic acid, where halo is fluoro, chloro or bromo, and β-(pyrazol-l-yl)-L-alanine. These compounds were found to be neither substrates nor inhibitors of HAL. Additional experiments were performed on 4-methylimidazole/glycine and imidazole/L-alanine to test for isotope exchange in the imidazole ring but none were observed. 2-methylimidazole was found to be a competitive inhibitor of HAL with a Ki value of 20 mM.
The longitudinal resistance of a quantum Hall system with a density gradient
Creators: name: Ilan, R.
name: Cooper, N. R.
name: Stern, Ady
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Following recent experiments, we consider current flow in two dimensional electronic systems in the quantum Hall regime where a gradient in the electron density induces a spatial variation in the Hall resistivity. Describing the system in terms of a spatially varying local resistivity tensor, we show that in such a system the current density is generically non-uniform, with the current being pushed towards one side of the sample. We show that, for sufficiently large density gradient, the voltage along that side is determined by the change of the Hall resistivity, and is independent of the microscopic longitudinal resistivity, while the voltage on the opposite side is small and determined by both longitudinal and Hall resistivities. We solve some particular models in detail, and propose ways by which the microscopic longitudinal resistivity may be extracted from measurements of the longitudinal voltage on both sides of the sample.
description: 9 pages, 3 figures
Softwood Lumber: Exact Significance of the Recent Canadian Victory before the WTO and Prospects in the Context of the Pending Second Lumber Case
Creators: name: Benitah, Marc
name: Benitah, Marc
Publisher: name: Unknown
Year: 2003
Subjects: subject: International Relations/Trade
subject: Canada
subject: cross-border methodology
subject: dispute
subject: financial contribution
subject: softwood lumber
subject: stumpage
subject: United States
subject: WTO

description: Recently, the WTO Panel in charge of the softwood lumber case brought by Canada against the United States ruled in favor of Canada. The "benefit conferred" criterion played a critical role in the ruling, which concluded that the United States used a flawed cross-border methodology to demonstrate the existence of such a benefit. However, the Canadian victory would have been more decisive if the WTO panel had found the absence of a governmental financial contribution. The cross-border methodology will be once again at the heart of the pending second lumber case before the WTO. This article evaluates the prospects for the case in this context.
PHARMACEUTICAL INDUSTRIAL PLANT TRANSIENT AND POWER FACTOR IMPROVEMENT USING SPLIT-PHASE MACHINE
Creators: name: Esobinenwu, Chizindu Stanley
name: Lamidi Salihu, Owuda
Publisher: name: ZAP Journals
Year: 2024
Subjects: Pharmaceutical
Apothecaries
Morphine
Strychnine
Reactance
Capacitance
Inductance

description: Pharmaceutical industrial plant transient and power factor improvement using split-phase machine is presented. Pharmaceutical industrial plant study was carried out to examine transient stability and improve the power factor of the industrial plant so as to maintained quality services. This is because; stress on pharmaceutical industrial plant systems is increasing day by day, due to faults and sudden load change that constitutes negative threat to the industrial. Pharmaceutical industry are apothecaries that engage in wholesale, production of drugs such as morphine, quinine, and strychnine and companies that established research laboratory and discovered medical applications for their products. Electrical transients current is current before reaching steady state and are fast rise time, short duration energy pulses that have voltage and current components often transmitted down power lines. Power line transients are when AC/DC connections are made, broken, short circuit, that constitute negative threat to pharmaceutical industrial plant. Power factor improvements means generating reactive power and common methods are capacitor banks, synchronous condenser and phase advancer. A low power factor increased energy consumption, reduced efficiency, and additional costs. Split phase machine is a single-phase machine, with two windings, one provided with a starting winding, another with running winding and energized continuously. The alternating current circuit of pharmaceutical industrial plant contains pure reactance like capacitive or inductive voltage and current that is 90 degrees out of phase and in most cases no useful real power is developed. Laboratory investigating reveals that this was due to the fact that some reactance and the apparent power (VA) were greater than the real power (W). The difference between the real and apparent was caused by reactance known as reactive power (Var). The capacitance was connected across the machine load to reduce the transient line current and apparent power, the added capacitive reactance suppressed the transient line current to a minimum value thereby changed the real power consumed by the pharmaceutical machine. Transient and power factor improved drastically for smooth pharmaceutical industrial plant operation. The stator current decreases as power factor increases, the power factor peak at the stator current null point at 0.14 ampere, and at real power of 50 watts, the power factor is almost at unity (0.99) The experiment on the split-phase machine drives was performance and its various run-up characteristics results were presented graphically for dynamic study and this is recommended for technicians, operators, engineers and machines designers of pharmaceutical industries.
Detection of Single Electron Charging in an Individual InAs Quantum Dot by Noncontact Atomic Force Microscopy
Creators: name: Stomp, Romain
name: Miyahara, Yoichi
name: Schaer, Sacha
name: Sun, Qingfeng
name: Guo, Hong
name: Grutter, Peter
name: Studenikin, Sergei
name: Poole, Philip
name: Sachrajda, Andy
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Single electron charging in an individual InAs quantum dot was observed by electrostatic force measurements with an atomic force microscope (AFM). The resonant frequency shift and the dissipated energy of an oscillating AFM cantilever were measured as a function of the tip-back electrode voltage and the resulting spectra show distinct jumps when the tip was positioned above the dot. The observed jumps in the frequency shift, with corresponding peaks in dissipation, are attributed to a single electron tunneling between the dot and the back electrode governed by Coulomb blockade effect, and are consistent with a model based on the free energy of the system. The observed phenomenon may be regarded as the ``force version'' of the Coulomb blockade effect.
description: 4 pages, 4 figures
Agricultural Biotechnology and the FTAA: Issues and Opportunities
Creators: name: Gaisford, James D.
name: Gaisford, James D.
Publisher: name: Unknown
Year: 2002
Subjects: subject: International Relations/Trade
subject: Research and Development/Tech Change/Emerging Technologies
subject: biotechnology
subject: BioSafety Protocol
subject: Free Trade Area of the Americas
subject: FTAA
subject: World Trade Organization

description: This article examines trade and intellectual property rights questions associated with agricultural biotechnology in the Western Hemisphere and goes on to chart a potential course through which they could be addressed by an agreement on a Free Trade Area of the Americas. Issues pertaining to import approvals, labelling, exports to sensitive markets, intellectual property piracy and regulatory cooperation are considered.