cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Superconductivity in the $η$-carbide-type oxides Zr4Rh2Ox
Creators: name: Ma, KeYuan
name: Lago, Jorge
name: von Rohr, Fabian O.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on the synthesis and the superconductivity of Zr$_4$Rh$_2$O$_{x}$ ($x$ = 0.4, 0.5, 0.6, 0.7, 1.0). These compounds crystallize in the $η$-carbide structure, which is a filled version of the complex intermetallic Ti$_2$Ni structure. We find that in the system Zr$_4$Rh$_2$O$_{x}$, already a small amount ($x$ $\geq$ 0.4) of oxygen addition stabilizes the $η$-carbide structure over the more common intermetallic CuAl$_2$ structure-type, in which Zr$_2$Rh crystallizes. We show that Zr$_4$Rh$_2$O$_{0.7}$ and Zr$_4$Rh$_2$O are bulk superconductors with critical temperatures of $T_c \approx$ 2.8 K and 4.7 K in the resistivity, respectively. Our analysis of the superconducting properties reveal both compounds to be strongly type-II superconductors with critical fields up to $μ_0 H_{c1}$(0) $\approx$ 8.8 mT and $μ_0 H_{c2}$(0) $\approx$ 6.08 T. Our results support that the $η$-carbides are a versatile family of compounds for the investigation of the interplay of interstitial doping on physical properties, especially for superconductivity.
Improved W boson mass measurement with the D0 detector
Creators: name: The D0 Collaboration
name: Abazov, V. M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have measured the W boson mass using the D0 detector and a data sample of 82 pb^-1 from the Tevatron collider. This measurement used W -> e nu decays, where the electron is close to a boundary of a central electromagnetic calorimeter module. Such 'edge' electrons have not been used in any previous D0 analysis, and represent a 14% increase in the W boson sample size. For these electrons, new response and resolution parameters are determined, and revised backgrounds and underlying event energy flow measurements are made. When the current measurement is combined with previous D0 W boson mass measurements, we obtain M_W = 80.483 +/- 0.084 GeV. The 8% improvement from the previous D0 measurement is primarily due to the improved determination of the response parameters for non-edge electrons using the sample of Z bosons with non-edge and edge electrons.
description: submitted to Phys. Rev. D; 20 pages, 18 figures, 9 tables
Whore Foods
Creators: name: Warman, Laura
Publisher: name: University of Massachusetts Amherst
Year: 2017

Whore Foods is a poetry thesis exploring the life of a cashier at an organic grocery store. To be the cashier is to be exposed. To be a femme gay body in public is to become heterosexual. A community can be formed through isolation. Cashiers and customers made individuals through capitalism form collectives. Through pleasure, through community, the work seeks to gather.
Результати та перспективи комплексного історико-археологічного дослідження феномену Овруцької околичної шляхти в Овруцькому проекті
Creators: name: Томашевський, Андрій
Publisher: name: figshare
Year: 2020
Subjects: subject: 220210 History of Philosophy
subject: FOS: Philosophy, ethics and religion

description: Томашевський А.П. Результати та перспективи комплексного історико-археологічного дослідження феномену Овруцької околичної шляхти в Овруцькому проекті. Шляхетство Полісся України. Старовинні роди овруцької шляхти: матеріали науково-практичної конференції, 20-21 квітня 2018 року. К., Вид-во ТОВ «НПВ Інтерсервіс», 2018. – 216с. – С.33-44.
Pressure-enhanced spin-density-wave transition in double-layer nickelate $La_{3}Ni_{2}O_{7-δ}$
Creators: name: Zhao, Dan
name: Zhou, Yanbing
name: Huo, Mengwu
name: Wang, Yu
name: Nie, Linpeng
name: Yang, Ye
name: Ying, Jianjun
name: Wang, Meng
name: Wu, Tao
name: Chen, Xianhui
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recently, a signature of high-temperature superconductivity above the liquid nitrogen temperature (77 K) was reported for $La_{3}Ni_{2}O_{7-δ}$ under pressure. This finding immediately stimulated intense interest in the possible mechanism of high-$T_{c}$ superconductivity in double-layer nickelates. Notably, the pressure-dependent phase diagram inferred from transport measurements indicates that the superconductivity under high pressure emerges from the suppression of density-wave-like order at ambient pressure, which is similar to high-temperature superconductors. Here, nuclear magnetic resonance (NMR) spectroscopy of $^{139}La$ nuclei was performed to study the density-wave-like transition in a single crystal of $La_{3}Ni_{2}O_{7-δ}$. At high temperatures, two sets of sharp $^{139}La$ NMR peaks are clearly distinguishable from a broad background signals, which are ascribed to La(1) sites from two bilayer Ruddlesden-Popper phases with different oxygen vacancy $δ$. As the temperature decreases, the temperature-dependent $^{139}La$ NMR spectra and nuclear spin-lattice relaxation rate $(1/T_{1}$) for both La(1) sites provide evidence of spin-density-wave (SDW) ordering below the transition temperature ($T_{SDW}$), which is ~ 150 K. The anisotropic splitting in the NMR spectra suggests the formation of a possible double spin stripe with magnetic moments aligned along the c-axis. Furthermore, we studied the pressure-dependent SDW transition up to ~ 2.7 GPa. Surprisingly, the $T_{SDW}$ inferred from NMR measurements of both La(1) sites increases with increasing pressure, which is opposite to the results from previous transport measurements under pressure and suggests an intriguing phase diagram between superconductivity and SDW. All these results will be helpful for building a connection between superconductivity and magnetic interactions in double-layer nickelates.
description: 17 pages, 4 figures
Consumers’ willingness-to-pay for low-calorie labeled Rice
Creators: name: Iwamoto, Hiroyuki
name: Iwamoto, Hiroyuki
Publisher: name: Unknown
Year: 2012
Subjects: subject: Consumer/Household Economics
subject: Choice Experiment
subject: Quality of Life (QOL)
subject: Wellness Market

description: The purpose of this study is to examine the importance of low calorie content in Japanese consumers’ rice purchasing decisions. The Choice Modeling (Random Parameter Logit Model) is used in order to quantify the welfare change associated with the change in the level of low calorie content, local origin label, price attribute for the sample of Japanese consumers in March 2009. The consumer has a positive perception of local origin and rice cultivar label. Average evaluation of the low calorie content attribute is negative (-116 yen/5kg). But, half of samples have positive perception of low calorie content. Their willingness to pay for low-calorie content attribute range from 800-900 yen/5kg.The results suggests that latent demand for low calorie labelled rice exists on a limited scale.
Drag Reduction Performance of Mechanically Degraded Dilute Polyethylene Oxide Solutions
Creators: name: Farsiani, Yasaman
name: Saeed, Zeeshan
name: Elbing, Brian R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Mechanical degradation of dilute solutions of polyethylene oxide (PEO) via chain scission was investigated within a turbulent pipe flow. Comparisons of the drag reduction performance with and without degradation were made by matching the onset of drag reduction conditions, which has been shown for PEO to be related to the mean molecular weight. The bulk flow behavior of both the degraded and non-degraded samples were generally consistent with trends observed in the literature, but a subset of conditions showed significant deviation in the slope increment (drag reduction performance) between the degraded and non-degraded samples. When they deviated, the degraded samples were consistently more efficient than the non-degraded samples even though they had the same mean molecular weight. The deviations were shown to scale with the normalized difference between the initial and final molecular weights. The current data and analysis as well as the literature suggests that the deviations in the polymer performance (slope increment) are related to changes in the molecular weight distribution. More specifically, the improved performance of the degraded samples relative to the non-degraded ones at the mean molecular weight of the degraded sample indicates an excess of longer polymer chains since the higher chain fractions in a degraded solution more effectively control the flow properties when within a certain degree of degradation and Reynolds number.
description: 36 pages, 8 figures, 3 tables
title: The “CASE” for Assessments
title: An Evaluation of CASE End of Course Assessments and Teacher Motivation
titleType: Subtitle
Creators: name: Hauser, Andrew
Publisher: name: University of Kentucky Libraries
Year: 2021
Subjects: subject: FOS: Educational sciences

description: Curriculum for Agricultural Science Education (CASE) End of Course (EoC) assessments are summative assessments used to evaluate the CASE curriculum. This quantitative study explored the effects teacher motivation has on student performance on CASE EoC assessments. CASE teachers (n= 55) who participated in the study responded to the 28-item CASE End of Course Assessment Teacher Motivation Questionnaire on a 5-point Likert-type scale. The researcher conducted a Pearson r Correlation test to determine a relationship between questionnaire mean values and secondary student assessment data. Results from the study outline frequency of responses, perceived value and expectancy mean values, and correlations between teacher motivation and secondary student assessment data. Responses outline concerns with CASE EoC assessments and varying levels of motivation. A significant relationship was determined between expectancy and secondary student assessment data. Recommendations for practice and implications of the findings are provided.
description: © 2021 Andrew Lawrence Hauser
Fertility decline in a traditional society : a case of Bali
Creators: name: Streatfield, Kim
Publisher: name: The Australian National University
Year: 1982
Subjects: subject: Birth control Indonesia Bali Island
subject: Fertility, Human Indonesia Bali Island
subject: Bali (Indonesia : Province) Population

description: In the late 1970s a number of reports indicated that the Indonesian Family Planning Program had contributed to a rapid and substantial fertility decline in Bali. The high fertility setting in Bali into which the program was introduced around 1970, did not appear to be conducive to a small family norm and thus to such a fertility decline. Socially, Bali was still effectively traditional; economically, there had been little development in the areas usually considered, in demographic transition theory, prerequisite for fertility decline. This thesis describes a village study undertaken to examine the questions of the apparent changes in fertility, and the apparent dramatic rise in family planning use; and if such changes were verified, to attempt to elucidate the underlying reasons. The study is based primarily on a survey of 1,088 ever-married women aged 15 to 54 years in three villages in the traditional regency of Klungkung, Bali. The findings are that fertility in these villages had indeed fallen dramatically, from a total fertility rate of 6.5 in the late 1960s to 3.5 in the late 1970s. During this period family planning prevalence had increased from less than 5 percent to around 50 percent of eligible couples. The analysis indicates that almost all the fertility decline was the result of program family planning use. The virtual absence of differentials in both fertility and family planning use led to a conclusion emphasizing the critical importance of Balinese cultural factors in the rapidity of the uptake of family planning, and the subsequent change in fertility behaviour. While credit is given to the family planning program for efficient implementation, the conclusion is that the Balinese communities readily accepted the concept of family planning and fertility limitation as a potentially fruitful approach to alleviate the current problems of limited resources, particularly land, and to achieve the aspirations stemming from the modernizing changes of recent years.
Institutional Performance in Natural Resource Management: A Study of Institutional Interaction in the Implementation of Watershed Development in Andhra Pradesh, India
Creators: name: Jain, Dinesh
name: Gandhi, Vasant P.
name: Jain, Dinesh
name: Gandhi, Vasant P.
Publisher: name: Unknown
Year: 2012
Subjects: Resource /Energy Economics and Policy

description: The effective management of natural resources is increasingly critical for growth and development in India. The research examines the nature and impact of the interaction between formal and informal institutional structures in the rural areas in the context of the implementation of the major national initiative of watershed development programmes in India. It uses the concepts of new institutional economics and management theories of governance. It develops a conceptual framework which can be used to understand and explain the need and dynamics of institutional interaction and its relationship to institutional performance. The relevance of the framework is examined through case studies and a primary survey on the determinants of institutional performance in Andhra Pradesh, India. It seeks to contribute to the theory of institutions and the better design of institutions in watershed development.
Using Dynamic Analysis to Generate Disjunctive Invariants
Creators: name: Nguyen, ThanhVu
name: Kapur, Deepak
name: Weimer, Westley
name: Forrest, Stephanie
Publisher: name: arXiv
Year: 2019
Subjects: subject: Software Engineering (cs.SE)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Program invariants are important for defect detection, program verification, and program repair. However, existing techniques have limited support for important classes of invariants such as disjunctions, which express the semantics of conditional statements. We propose a method for generating disjunctive invariants over numerical domains, which are inexpressible using classical convex polyhedra. Using dynamic analysis and reformulating the problem in non-standard "max-plus" and "min-plus" algebras, our method constructs hulls over program trace points. Critically, we introduce and infer a weak class of such invariants that balances expressive power against the computational cost of generating nonconvex shapes in high dimensions. Existing dynamic inference techniques often generate spurious invariants that fit some program traces but do not generalize. With the insight that generating dynamic invariants is easy, we propose to verify these invariants statically using k-inductive SMT theorem proving which allows us to validate invariants that are not classically inductive. Results on difficult kernels involving nonlinear arithmetic and abstract arrays suggest that this hybrid approach efficiently generates and proves correct program invariants.
description: appear in ICSE 2014
The Proton-Deuteron Break-Up Process in a Three-Dimensional Approach
Creators: name: Fachruddin, I.
name: Elster, Ch.
name: Gloeckle, W.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The pd break-up amplitude in the Faddeev scheme is calculated by employing a three-dimensional method without partial wave decomposition (PWD). In a first step and in view of higher energies only the leading term is evaluated and this for the process d(p,n)pp. A comparison with the results based on PWD reveals discrepancies in the cross section around 200 MeV. This indicates the onset of a limitation of the partial wave scheme. Also, around 200 MeV relativistic effects are clearly visible and the use of relativistic kinematics shifts the cross section peak to where the experimental peak is located. The theoretical peak height, however, is wrong and calls first of all for the inclusion of rescattering terms, which are shown to be important in a nonrelativistic full Faddeev calculation in PWD.
description: 4 pages, 5 figures, Proceeding of the Second Asia-Pasific Conference on Few-Body Problem in Physics, August 2002, Shanghai, China
Leioproctus (Minycolletes) helichrysi Maynard 2013, n.comb.
Creators: name: Maynard, Glynn Vivian
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Leioproctus
Leioproctus helichrysi

description: Leioproctus (Minycolletes) helichrysi (Cockerell, 1918) n.comb.
 Paracolletes helichrysi * Cockerell 1918: 112; 1934: 27.
 Leioproctus (Microcolletes) helichrysi (Cockerell). Michener 1965: 55.
 Type
 Paracolletes helichrysi — Queensland: holotype ♀, Tamborine Mountain, 23.x.1917 *, H.H. Hacker off Helichrysum bracteatum blossom (BMNH 17 a.474). (* No date written in description.)
 Additional material examined: 4♀, 2♂ Queensland: Tamborine Mountain. New South Wales: Ben Lomond. Victoria: Kiata.
 Months collected: February, October, November.
 Floral visitations: Asteraceae: Xerochrysum bracteatum.
 Female: Length ca 7.5 mm. Head— Hair moderately dense, branched, semierect; supraclypeal area shallowly raised, punctate; mandibles with apical tooth large with clearly defined small, dorsal tooth; labial palps not reaching apex of extended glossa, basal segment as long as following 2 segments combined. Mesosoma — Hair of scutum and scutellum pale brown, erect, moderate length; propodeal triangle polished; tegulae translucent brown. First recurrent vein enters second submarginal cell apical to middle. Basitibial plate about 0.25 x length of tibia, covered in dense, whitish, thick hair, apex blunt; scopa all white; inner hind tibial spur with 8 fine teeth. Metasoma— Hair fine, short, appressed; prepygidial fimbria pale about 0.5 x width of T5; pygidial plate granular, narrowly rounded apically.  Male —  As for female except as follows: Length ca 7 mm. Head— Hair dense; F2–3 length less than width, F1, 4–11 length about equal to width; mandibles narrow, dorsal tooth indistinct. Metasoma— S5 with long truncate white fringe; T7 with bare median area. S7–8 and genitalia see figs 169–171.
description: Published as part of Maynard, Glynn Vivian, 2013, Revision of Goniocolletes and seven Australian subgenera of Leioproctus (Hymenoptera: Apoidea: Colletidae), and description of new taxa, pp. 1-114 in Zootaxa 3715 (1) on page 90, DOI: 10.11646/zootaxa.3715.1.1, http://zenodo.org/record/6507387
Artist Roles in Art and Research Projects
Creators: name: Paton, Cathy
name: Bernier, Alexe
name: Sinding, Christina
name: Maxwell, Colina
name: Sproule, Sarah
name: Sas van der Linden, Leora
Publisher: name: Zenodo
Year: 2024

description: There has been a recent and exciting shift in academic research landscapes: researchers are increasingly interested in integrating art into their projects. 

This resource was created to outline the many ways in which artists might lead, support, or become involved in research projects. It also considers some of the tensions and benefits that artists might experience while engaging in research.

 Clear understandings of artists’ roles and contributions in arts-research projects can guide choices about adequate and appropriate recognition and compensation for artists, and funding for arts-research projects. A separate resource – Centre[4]’s Art and Research Compensation Guidelines – may also be helpful in planning fair compensation for artists.
$ϕ^n$ trajectory bootstrap
Creators: name: Li, Wenliang
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We perform an extensive bootstrap study of Hermitian and non-Hermitian theories based on the novel analytic continuation of $\langleϕ^n\rangle$ or $\langle(iϕ)^n\rangle$ in $n$. We first use the quantum harmonic oscillator to illustrate various aspects of the $ϕ^n$ trajectory bootstrap method, such as the large $n$ expansion, matching conditions, exact quantization condition, and high energy asymptotic behavior. Then we derive highly accurate solutions for the anharmonic oscillators with the parity invariant potential $V(ϕ)=ϕ^2+ϕ^{m}$ and the $\mathcal{PT}$ invariant potential $V(ϕ)=-(iϕ)^{m}$ for a large range of integral $m$, showing the high efficiency and general applicability of this new bootstrap approach. For the Hermitian quartic and non-Hermitian cubic oscillators, we further verify that the non-integer $n$ results for $\langleϕ^n\rangle$ or $\langle(iϕ)^n\rangle$ are consistent with those from the wave function approach. In the $\mathcal{PT}$ invariant case, the existence of $\langle(iϕ)^n\rangle$ with non-integer $n$ allows us to bootstrap the non-Hermitian theories with non-integer powers, such as fractional and irrational $m$.
description: v4: 22 pages, 11 figures, typos corrected, discussions improved; v3: 21 pages, 9 figures, abstract and introduction rewritten, many minor improvements made, hopefully more reader-friendly; v2: 24 pages, 9 figures, irrational example added, typos corrected, discussion improved, references added
Neomedaura Ho 2020, gen. nov.
Creators: name: Ho, Wai-Chun George
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Phasmida
Phasmatidae
Neomedaura

description: 3.3 Neomedaura gen. nov.
 Type species: Neomedaura yokdonensis sp. nov.
 Diagnosis. Neomedaura gen nov. is currently known only from Vietnam and is closely related to Medaura Stål, 1875, but can be separated by smaller size and scarcely armed legs in the both sexes.
Description. Medium-sized for Clitumninae. Apterous. Body unarmed, slender and long. Female larger and more robust than male. Head oblong. Vertex with a pair of minute horns in female, unarmed in male. Occiput flat. Antennae short, distinctly segmented. Thorax unarmed, only with small granules, slender and elongate. Mesonotum parallel-sided in female, broadly emarginated medially in male. Abdomen cylindrical. Female with distinct praeopercular organ on posteromedian area of seventh sternum. Supra-anal plate indistinct in both sexes. Anal segment with a small emargination on posterior margin in female, dilated into two semi-tergites in male. Female subgenital plate scoop-shaped and elongate. Male poculum small and cup-shaped. Cerci short, flattened and apically pointed in female, cylindrical and apically rounded in male. Legs slender and long, armature indistinct and scarce.
Distribution. Vietnam.
 Remarks. This new genus only includes the type species Neomedaura yokdonensis sp. nov.
 Etymology. The specific epithet of this new genus is derived from the Latin words ‘ Neo ’ (= new) and ‘ medaura ’ referring to the relationship with Medaura Stål, 1875.
description: Published as part of Ho, Wai-Chun George, 2020, New taxa of Clitumninae from Vietnam (Phasmatodea: Phasmatidae), pp. 104-117 in Zoological Systematics 45 (2) on page 112, DOI: 10.11865/zs.202015, http://zenodo.org/record/5365982
Rare Kaon Decay K^+ --> π^+ ν\barν in SU(3)_C X SU(3)_L X U(1)_N Models
Creators: name: Long, Hoang Ngoc
name: Trung, Le Phuoc
name: Van, Vo Thanh
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The rare kaon decay K^+ --> π^+ ν\barν is considered in the framework of the models based on the SU(3)_C X SU(3)_L X U(1)_N (3 - 3 - 1) gauge group. It is shown that a lower bound of the Z' mass in the 3 - 3 - 1 model with right-handed neutrinos at a value of 3 TeV is derived, while that in the minimal version -- 1.7 TeV.
description: 7 pages, 1 figure, latex
Leioproctus (Minycolletes) insitus Maynard 2013, sp.n.
Creators: name: Maynard, Glynn Vivian
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Leioproctus
Leioproctus insitus

description: Leioproctus (Minycolletes) insitus sp.n.
 Type
 Leioproctus (Minycolletes) insitus — Queensland: holotype ♀, 2 miles (3.2 k) S Nanango, 7.x.1978, T.F. Houston off daisy blossom (SAM); paratypes 1♀, 3♂, Amiens, 4.xi.1965, J.C. Cardale (QM).
 Additional material examined: 1♀ Queensland: N of Caloundra.
 Months collected: October, November.
 Floral visitations: Myrtaceae: Leptospermum; daisy blossom.
 Female— Length ca 7 mm; integument brown to black; hair mostly white. Head —Hair moderately dense, white moderately long, semierect; ventral flagellum yellow, antennal sockets shallowly depressed; supraclypeal area shallowly raised, punctate; apical tooth of mandible large, dorsal tooth clearly defined; labial palp just reaching apex of extended glossa, segments subequal in length. Mesosoma —Hair pale brown, long, moderately dense; propodeal triangle polished, lateral foveae not extending into basal area, tegulae translucent brown, first recurrent vein enters second submarginal cell towards the apex. Basitibial plate a little less than 0.25 x length of tibia, covered in thick black hairs; apex pointed; hind tibial scopa pale brown dorsally; inner hind tibial spur with about 11 fine teeth. Metasoma —Hair of terga short, fine, appressed; prepygidial fimbria brown, covering about 0.75 x width of T5; pygidial plate granular, apex narrow. Male —As for female except as follows: Length ca 6 mm. Head —All flagella segments with length less than width. Mesosoma —Hair sparse. Metasoma —T7 bare medially; S5 with a long, apical fringe, with truncate apical margin. For S7–8 and genitalia see figs 172–174.
description: Published as part of Maynard, Glynn Vivian, 2013, Revision of Goniocolletes and seven Australian subgenera of Leioproctus (Hymenoptera: Apoidea: Colletidae), and description of new taxa, pp. 1-114 in Zootaxa 3715 (1) on page 90, DOI: 10.11646/zootaxa.3715.1.1, http://zenodo.org/record/6507387
Polygonal Maxwell's fisheye lens via transformation optics as multimode waveguide crossing
Creators: name: Badri, S. Hadi
name: Saghai, H. Rasooli
name: Soofi, Hadi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Multimode waveguide crossings are crucial components for novel mode-division-multiplexing systems. One of the challenges of multimode waveguide routing in MDM systems is decreasing the inter-mode crosstalk and mode leakage of waveguide crossings. In this work, we present the intersections of three and four waveguides based on polygonal Maxwell's fisheye lens via transformation optics. The designed lenses are implemented by mapping their refractive index to the thickness of guiding Si layer. The three-dimensional finite-difference time-domain simulations are used to evaluate the performance of the proposed $3\times3$ and $4\times4$ crossings. The footprint of the $3\times3$ and $4\times4$ waveguide star crossings are $18.6\times18.6$ and $27.5\times27.5$ $μm^2$, respectively. For both waveguide crossings, the intermodal crosstalk in the output port is lower than -22dB while the crosstalk to other ports is lower than -37dB for TE0, TE1, and TE2 modes. The insertion losses for these modes are lower than 0.5dB in a bandwidth of 415nm covering the whole optical telecommunication bands.
Model with Gauge Coupling Unification on $S^1/(Z_2 \times Z_2')$ Orbifold
Creators: name: Haba, N.
name: Kondo, T.
name: Shimizu, Y.
name: Suzuki, Tomoharu
name: Ukai, Kazumasa
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We suggest a simple grand unified theory where the fifth dimensional coordinate is compactified on an $S^1/(Z_2 \times Z_2')$ orbifold. This model contains additional ${\bf 10 + \overline{10}}$, (${\bf 15 + \overline{15}}$) and two ${\bf 24}$ Higgs multiplets in the non-supersymmetric SU(5) grand unified theory. Although this model is non-supersymmetric theory, the gauge coupling unification is realized due to the mass splittings of Higgs multiplets by $S^1/(Z_2 \times Z_2')$ orbifolding. The constraints from the $b \to s γ$, $μ\to e γ$, and electron and muon anomalous magnetic moments are also discussed.
description: 7 pages, LaTeX
Topological Kondo effect with spinful Majorana fermions
Creators: name: Bollmann, Steffen
name: Väyrynen, Jukka I.
name: König, Elio J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Motivated by the importance of studying topological superconductors beyond the mean-field approximation, we here investigate mesoscopic islands of time reversal invariant topological superconductors (TRITOPS). We characterize the spectrum in the presence of strong order parameter fluctuations in the presence of an arbitrary number of Kramers pairs of Majorana edge states and study the effect of coupling the Coulomb blockaded island to external leads. In the case of an odd fermionic parity on the island, we derive an unconventional Kondo Hamiltonian in which metallic leads couple to both topological Majorana degrees of freedom (which keep track of the parity in different leads) and the overall spin-1/2 in the island. For the simplest case of a single wire (two pairs of Majorana edge states), we demonstrate that anisotropies are irrelevant in the weak coupling renormalization group flow. This permits us to solve the Kondo problem in the vicinity of a Toulouse-like point using Abelian Bosonization. We demonstrate a residual ground state entropy of $\ln(2)$, which is protected by spin-rotation symmetry, but reduced to $\ln(\sqrt{2})$ (as in the spinless topological Kondo effect) by symmetry breaking perturbations. In the symmetric case, we further demonstrate the simultaneous presence of both Fermi liquid and non-Fermi liquid like thermodynamics (depending on the observable) and derive charge and spin transport signatures of the Coulomb blockaded island.
description: 10+13 pages, 4+1 figures
Changing comparative advantage in Korean agriculture : a domestic resource cost study
Creators: name: In Chan, Ahn
Publisher: name: Canberra, ACT : The Australian National University
Year: 1982
Subjects: subject: Agriculture Economic aspects Korea

description: The role of agriculture in saving or earning foreign exchange is usually very important for a developing open economy. How important it is for any particular country depends on the extent of agricultural comparative advantage enjoyed by that country, which changes as its economy develops. The main purpose of this study is to trace the locus of comparative advantage of rice and barley production in Korea through the Domestic Resource Cost (DRC) analysis. Secondary data from the Ministry of Agriculture and Fisheries of the Republic of Korea are used for this purpose. The data on foodgrain production and trade and the protection and DRC estimates for the period 1964 to 1980 reveal that Korea's rice and barley industries have become both increasingly less competitive and increasingly inefficient in saving foreign exchange. The production and trade data show that self-sufficiency in foodgrains has declined from close to 100 per cent in the mid 1960s to less than 70 per cent in the late 1970s, despite the fact that prices received by Korean cereal producers have risen from about equal to world prices in the mid 1960s to more than three times world prices in the late 1970s. Over this period the domestic resource cost ratios for rice and barley have increased from slightly less than unity to three or more, indicating that on average for each unit of foreign exchange saved by producing rice and barley domestically rather than importing it, the Korean economy foregoes about three units of foreign exchange by not being able to use those resources in more productive activities. The thesis concludes that policies aimed at facilitating structural adjustment would be far more appropriate for Korea, given its rapid decline in agricultural comparative advantage, than policies aimed at ever increasing protection from import competition.
Weakly Supervised Object Detection in Chest X-Rays with Differentiable ROI Proposal Networks and Soft ROI Pooling
Creators: name: Müller, Philip
name: Meissen, Felix
name: Kaissis, Georgios
name: Rueckert, Daniel
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Weakly supervised object detection (WSup-OD) increases the usefulness and interpretability of image classification algorithms without requiring additional supervision. The successes of multiple instance learning in this task for natural images, however, do not translate well to medical images due to the very different characteristics of their objects (i.e. pathologies). In this work, we propose Weakly Supervised ROI Proposal Networks (WSRPN), a new method for generating bounding box proposals on the fly using a specialized region of interest-attention (ROI-attention) module. WSRPN integrates well with classic backbone-head classification algorithms and is end-to-end trainable with only image-label supervision. We experimentally demonstrate that our new method outperforms existing methods in the challenging task of disease localization in chest X-ray images. Code: https://github.com/philip-mueller/wsrpn
IMPACT OF MICROFINANCE ON HOUSEHOLD WELFARE: ASSESSING THE CASE OF SAMURDHI PROGRAM IN SRI LANKA
Creators: name: Thibbotuwawa, R.M.M.I.
name: Printhika, B.L.D.S.
name: Jayasinghe-Mudalige, Udith K.
name: Udugama, J.M.M.
name: Thibbotuwawa, R.M.M.I.
name: Printhika, B.L.D.S.
name: Jayasinghe-Mudalige, Udith K.
name: Udugama, J.M.M.
Publisher: name: Unknown
Year: 2012
Subjects: subject: Consumer/Household Economics
subject: Food Security and Poverty
subject: Household welfare
subject: Propensity Score Matching
subject: Samurdhi Poverty Alleviation Program.

description: Household Income & Expenditure Survey (2006/07) data were used to estimate the impacts of ‘Samurdhi’ – the largest state-sponsored microfinance program in Sri Lanka – on the status of household income, health, education, and food and non-food consumption. Propensity Score Matching was used to minimize selection bias. Propensity scores were estimated using a Probit Model to match “treated” households with “control” group to identify the impacts. The results show that Samurdhi possesses a significant impact on household welfare on income, consumption and education, despite the inefficiencies and political interferences associated with distribution of intended services.
Leioproctus (Minycolletes) paulus Maynard 2013, sp.n.
Creators: name: Maynard, Glynn Vivian
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Leioproctus
Leioproctus paulus

description: Leioproctus (Minycolletes) paulus sp.n.
 Types
 Leioproctus (Minycolletes) paulus — Western Australia: holotype ♂, 22 k NE Tamala HS (26˚42'S 113˚43'E), 21–23.viii.1980, C.A. Howard and T.F. Houston on Calandrinia polyandra (WAM 89 /599); paratype, 1♂, same data as holotype (WAM 89 / 600).
 Additional material examined: 2♂ Western Australia: 10 k S Nerren HS; 10 k ESE Meedo HS.
 Months collected: August.
 Floral visitations: Portulacaceae: Calandrinia polyandra.
 Female —Unknown. Male— Length ca 7 mm; integument black, fore leg orange, hair white with extremely short branches. Head— Hair long, dense with branches short such that hair looks simple; supraclypeal area flat, punctate; antennal socket not depressed; F2–4 length less than width, F1,5–11 length almost as long as width; mandibles with long, slender, apical tooth and large pollex, long branched hair to level of dorsal tooth; maxillae constricted at bases of maxillary palps; labial palps not reaching apex of extended glossa, segments short, subequal in length. Mesosoma — Hair of scutum and scutellum long, moderately sparse; tegulae translucent brown; propodeal triangle coriaceous. First recurrent vein enters second submarginal cell almost at apex. Fore and mid tibia with posterior apical tufts of hair; apex of fore femur and anterior fore tibia orange; fore and mid legs with short hair on legs, hind legs with long hair. Metasoma— Hair of terga short, fine appressed; T7 medially bare. S5 with long, dense apical fringe with longest hair laterally (emarginate). For details of S7–8 and genitalia see figs 175–177.
description: Published as part of Maynard, Glynn Vivian, 2013, Revision of Goniocolletes and seven Australian subgenera of Leioproctus (Hymenoptera: Apoidea: Colletidae), and description of new taxa, pp. 1-114 in Zootaxa 3715 (1) on page 91, DOI: 10.11646/zootaxa.3715.1.1, http://zenodo.org/record/6507387
To bind or not to bind: Lambda-Lambda hypernuclei and Xi hyperons
Creators: name: Gal, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Four-body Faddeev-Yakubovsky calculations for Lambda-Lambda-p-n do not produce a bound state for Lambda-Lambda hydrogen 4, although suitably defined three-body Faddeev calculations for Lambda-Lambda-d produce a 1+ bound state for Lambda-Lambda interactions fitted to the Lambda-Lambda helium 6 emulsion event from KEK E373. This is opposite to the normal situation where a four-body Faddeev-Yakubovsky calculation yields stronger binding than that due to a suitably defined three-body Faddeev calculation. For stranger systems, Faddeev calculations using Lambda-Xi interactions which simulate the Nijmegen soft-core model NSC97 (which is close to reproducing the KEK event) suggest that Lambda-Xi helium 6 marks the onset of nuclear stability for Xi hyperons.
description: Parallel-session invited talk at PANIC'02, to appear in NPA
Leioproctus (Minycolletes) pygmaeus Maynard 2013, sp.n.
Creators: name: Maynard, Glynn Vivian
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Leioproctus
Leioproctus pygmaeus

description: Leioproctus (Minycolletes) pygmaeus sp.n.
 Types
 Leioproctus (Minycolletes) pygmaeus — Western Australia: holotype ♂, 7 k SE Newman, 23.xii.1975, E.M. Exley and R.I. Storey off Acacia blossom (QM); paratypes 2♂, same data as holotype (QM).
 Months collected: December.
 Floral visitations: Fabaceae: Acacia.
 Female —Unknown. Male —Length ca 7 mm; integument black to dark brown, legs paler; hair white. Head— Vertex slightly curved above lateral ocelli; facial foveae absent; inner eye margins straight, converging below; surface sculpture of dense, small, clearly defined punctures with polished interspaces; hair dense, lying flat, strongly branched; supraclypeal area punctate, apex shallowly raised; interantennal distance greater than width of paraocular area at level of antennal sockets; F1,2 length less than width, whitish; dorsal tooth indistinct; epistomal suture weak; clypeus almost flat; malar space absent; labrum short polished, length less than 0.25 x width; width of gena less than eye width, when head viewed laterally; labial palps just longer than extended glossa, basal 3 segments subequal in length, apical segment 2 x long as other segments. Mesosoma — Scutum and scutellum with small, clearly defined punctures and polished interspaces; hair long, moderately dense; propodeal triangle polished without a defined basal area, tegulae transparent. Wings with stigma large, about 0.6 x length of costal margin of marginal cell; marginal cell broad, apex strongly divergent from costa; first recurrent vein enters second submarginal cell medianly; jugal lobe of hind wing narrow, reaching beyond cu-a; wing membrane clear. Legs with long, fine hair. Metasoma— Hair of terga moderately long, erect; gradulus weak or absent; pregradular area with minute punctures with granular interspaces; postgradular area similar but with fewer punctures; T7 bare medially; S5 with a short, dense, truncate apical fringe. Genitalia with gonobase about 0.25 x length of genitalia and large gonofossa; gonoforceps unornamented; vosellae somewhat enlarged. S7 with very large apical lobes for details of S7–8 and genitalia see figs 178–180.
description: Published as part of Maynard, Glynn Vivian, 2013, Revision of Goniocolletes and seven Australian subgenera of Leioproctus (Hymenoptera: Apoidea: Colletidae), and description of new taxa, pp. 1-114 in Zootaxa 3715 (1) on page 91, DOI: 10.11646/zootaxa.3715.1.1, http://zenodo.org/record/6507387
The magnetic properties of photospheric magnetic bright points with high resolution spectropolarimetry
Creators: name: Keys, Peter H.
name: Reid, Aaron
name: Mathioudakis, Mihalis
name: Shelyag, Sergiy
name: Henriques, Vasco M. J.
name: Hewitt, Rebecca L.
name: Del Moro, Dario
name: Jafarzadeh, Shahin
name: Jess, David B.
name: Stangalini, Marco
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Magnetic bright points are small-scale magnetic elements ubiquitous across the solar disk, with the prevailing theory suggesting that they form due to the process of convective collapse. Employing a unique full Stokes spectropolarimetric data set of a quiet Sun region close to disk centre obtained with the Swedish Solar Telescope, we look at general trends in the properties of magnetic bright points. In total we track 300 MBPs in the data set and we employ NICOLE inversions to ascertain various parameters for the bright points such as line-of-sight magnetic field strength and line-of-sight velocity, for comparison. We observe a bimodal distribution in terms of maximum magnetic field strength in the bright points with peaks at ~480 G and ~1700 G, although we cannot attribute the kilogauss fields in this distribution solely to the process of convective collapse. Analysis of MURaM simulations does not return the same bimodal distribution. However, the simulations provide strong evidence that the emergence of new flux and diffusion of this new flux play a significant role in generating the weak bright point distribution seen in our observations.
description: Accepted for publication in MNRAS: Letters
Polynomial Lie algebra methods in solving the second-harmonic generation model: some exact and approximate calculations
Creators: name: Karassiov, V. P.
name: Gusev, A. A.
name: Vinitsky, S. I.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We compare exact and SU(2)-cluster approximate calculation schemes to determine dynamics of the second-harmonic generation model using its reformulation in terms of a polynomial Lie algebra $su_{pd}(2)$ and related spectral representations of the model evolution operator realized in algorithmic forms. It enabled us to implement computer experiments exhibiting a satisfactory accuracy of the cluster approximations in a large range of characteristic model parameters.
description: LaTex file, 13 pages, 3 figures
Engineering Hierarchical Symmetries
Creators: name: Fu, Zhanpeng
name: Moessner, Roderich
name: Zhao, Hongzheng
name: Bukov, Marin
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The capacity to custom tailor the properties of quantum matter and materials is a central requirement for enlarging their range of possible functionalities. A particularly promising route is the use of driving protocols to engineer specific desired properties with a high degree of control and flexibility. Here, we present such a program for the tunable generation of sequences of symmetries on controllable timescales. Concretely, our general driving protocol for many-body systems generates a sequence of prethermal regimes, each exhibiting a lower symmetry than the preceding one. We provide an explicit construction of effective Hamiltonians exhibiting these symmetries, which imprints emergent quasiconservation laws hierarchically, enabling us to engineer the respective symmetries and concomitant orders in nonequilibrium matter. We provide explicit examples, including spatiotemporal and topological phenomena, as well as a spin chain realizing the symmetry ladder $\text{SU(2)}{\rightarrow}\text{U(1)} {\rightarrow} \mathbb{Z}_2{\rightarrow} E$. Our results have direct applications in experiments with quantum simulators.
Family size preference and use of contraception in Peninsular Malaysia
Creators: name: Rahman, Aminah Abdul
Publisher: name: Canberra, ACT : The Australian National University
Year: 1983
Subjects: subject: Family size Malaysia
subject: Birth control Malaysia

description: This study is an investigation of family size preference and the use of contraception among some currently married women in Peninsular Malaysia. The data are derived from the Ethnicity and Fertility Survey Malaysia, 1980 conducted by the National Family Planning Board, Malaysia. Findings from the analysis show that responses from the preference questions are not mere rationalisation of existing children but are meaningful indications of the family size norms. The role of ethnicity in influencing family size preference is quite extensive even after controlling for some demographic and socio-economic factors. However, the potential role of education especially in the rural areas, is significant and may be able to narrow the ethnic differences. The use of contraception seems to generally increase when the preferred number of children has been achieved and/or when there is excess fertility. However, among the Malays, this is mainly in the form of ineffective methods in contrast to the Chinese and Indians who tend to use more effective methods. At the same time, there are also indications that some women prefer to have excess children than to suffer the side-effects of contraception.
Quantum dissipation in a scalar field theory with gapped momentum states
Creators: name: Trachenko, K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Understanding quantum dissipation is important from both theoretical perspective and applications. Here, we show how to describe dissipation in a scalar field theory. We treat dissipation non-perturbatively, represent it by a bilinear term in the Lagrangian and quantize the theory. We find that dissipation promotes a gap in momentum space and reduces the particle energy. As a result, particle mass becomes dressed by dissipation due to self-interaction. The underlying mechanism is similar to that governing the propagation of transverse collective modes in liquids. We discuss the interplay between the dissipative and mass terms, the associated different regimes of field dynamics and the emergence of ultraviolet and infrared cutoffs due to dissipation.
Charm Physics and the Poor Sleeper's Impatience
Creators: name: Bigi, I. I.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: After a short review of the theoretical tools available to describe heavy flavour physics I sketch the present profile of the weak dynamics of charm hadrons with respect to lifetimes, oscillations and CP violation. I argue that comprehensive studies of charm decays provide novel portals to New Physics and suggest some benchmark figures for desirable sensitivities.
description: 16 pages, LATEX, no figures, Invited talk given at the 4th International Conference on B Physics and CP Violation, Ise, Japan, Feb. 19 - 23, 2001