cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Frequency and temporal effects in linear optical quantum computing
Creators: name: Rohde, Peter P.
name: Ralph, Timothy C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Typically linear optical quantum computing (LOQC) models assume that all input photons are completely indistinguishable. In practice there will inevitably be non-idealities associated with the photons and the experimental setup which will introduce a degree of distinguishability between photons. We consider a non-deterministic optical controlled-NOT gate, a fundamental LOQC gate, and examine the effect of temporal and spectral distinguishability on its operation. We also consider the effect of utilizing non-ideal photon counters, which have finite bandwidth and time response.
description: 10 pages, 9 figures, replaced with published version
Desempenho do comércio exterior em Minas Gerais: estrutura, vantagem comparativa e comércio intraindústria
Creators: name: Martins, Alexandra Pereira
name: Silva, Fernanda Aparecida
name: Gomes, Marilia Fernandes Maciel
name: Rosado, Patricia Lopes
name: Martins, Alexandra Pereira
name: Silva, Fernanda Aparecida
name: Gomes, Marilia Fernandes Maciel
name: Rosado, Patricia Lopes
Publisher: name: Unknown
Year: 2010
Subjects: subject: International Relations/Trade
subject: Revealed comparative advantage
subject: Trade intra-industry
subject: Exports

description: The globalization, an international process evidenced in the 80's decade, has requested the government and economic agents an orientation to reach international levels of competitiveness by the various sectors of the economy. Besides this fact, Minas Gerais state is the second state exporter in Brazil. It emphasizes the importance of the analysis of the structure and behavior of the export sector, as well as their effects on different economic sectors in the period 1996 to 2008. The objective of this paper is to identify and analyze groups of products that Minas Gerais state has revealed comparative advantages, degree of concentration of products and destinations of exports, and intra-industry or inter-industry trade. The theoretical model is based on the Theory of International Trade and Competitiveness. The analysis procedure utilizes indexes of revealed comparative advantages, contribution to trade balance ratio, Gini-Hischaman and trade intra-industry indexes. The data were generated by the Brazilian Department of Commerce. The results showed high concentration in a few products, such as (09) Coffee, tea, and spices, etc. (26) mining industry, (71) natural or cultured pearls, and (72) iron and steel, and destination markets, such as EU, NAFTA and Asia. Finally, the paper indicates that international trade in Minas Gerais state is basically inter-industrial, therefore a trade type Herckscher - Olhin.
Restricted versus unrestricted choice in labelled choice experiments: exploring the tradeoffs of expanding choice dimensions
Creators: name: Windle, Jill
name: Rolfe, John
name: Windle, Jill
name: Rolfe, John
Publisher: name: Unknown
Year: 2010
Subjects: subject: Resource /Energy Economics and Policy
subject: Choice complexity
subject: choice modelling experiments
subject: labelled alternatives
subject: policy management options
subject: multiple alternatives

description: The main objective of the study outlined in this paper was to examine how the inclusion of an additional labelled alternative, to provide respondents with more choice in a stated preference survey, impacted on choice complexity. The valuation context was to elicit preferences for improvements in the future condition of the Great Barrier Reef, Australia. A split sample experiment was implemented where one survey included four labelled alternatives: a status quo option and three specific policy management options (restricted choice). The other survey provided respondents with an unrestricted choice set by including a fifth alternative choice, labelled as “a combination of management options”. While the additional option improved opportunities to find an attractive choice profile, adding an extra alternative increased the complexity of the survey. The tradeoff between choice flexibility and complexity is examined in terms of changes in respondents’ choice behaviour and the performance of the different models. The results provide some evidence that adding a combination policy alternative did change the ways that respondents viewed tradeoffs, but that choice behaviour and subsequent value estimates were consistent across the two survey formats.
Rashba-Zener mechanism for nanoscale skyrmions and topological metals
Creators: name: Kathyat, Deepak S.
name: Mukherjee, Arnob
name: Kumar, Sanjeev
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a microscopic electronic mechanism for nanoscale skyrmion formation and topological metalicity. The mechanism, which relies on combining the classic double-exchange (DE) physics with the Rashba spin orbit coupling (SOC), not only provides an accurate understanding of existence of skyrmions but also explains key features in small angle neutron scattering (SANS) and Lorentz transmission electron microscopy (LTEM) data on thin films of a variety of magnetic metals. The skyrmion states are characterized as disordered topological metals via explicit calculations of Bott index and Hall conductivity. Local density of states (LDOS) display characteristic oscillations that are shown to be arising from a combination of confinement effect and gauge-field induced Landau level physics. The presence of oscillations in LDOS, without external magnetic flux, is a direct consequence of the Rashba-Zener (RZ) mechanism. The results are based on hybrid simulations on a model that explicitly retains itinerant electronic degrees of freedom. A simple physical picture is provided via an effective short-range spin model with coupling constants that depend on electronic kinetic energy. The mechanism reported here not only opens up a new approach to understand skyrmion formation in metals, but also provides a guiding principle for discovering exotic topological metal states.
description: 9 pages, 6 figures
Determinants of land use change: evidence from a community study in Honduras
Creators: name: Bergeron, Gilles
name: Pender, John L.
name: Bergeron, Gilles
name: Pender, John L.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Land Economics/Use
subject: Honduras
subject: land use
subject: Econometrics--Case studies
subject: Horticultural products
subject: Land management

description: This study investigates the micro-determinants of land use change using community, household and plot histories, an ethnographic method that constructs panel data from systematic oral recalls. A 20-year historical timeline (1975-1995) is constructed for the village of La Lima in central Honduras, based on a random sample of 97 plots. Changes in land use are examined using transition analysis and multinomial logit analysis. Transition analysis shows that land use transitions were relatively infrequent in areas under extensive cultivation, but more so in areas of intensive cultivation; and that most changes favored intensification. Econometric analysis suggests that land use intensification was influenced by plot level variables (especially altitude, slope, distance to a road and tenure), farm level variables (human capital, farm size, and ownership of productive implements), and by community variables (especially presence of technical assistance programs). To the extent these results are found to be more broadly representative, they suggest that there may be good potential to promote income-enhancing horticultural development through investments in technical assistance and education in similar communities elsewhere in Honduras. The study concludes that the plot history approach is a potentially valuable tool for investigating the underlying causes of change in land use at the micro-level. The method is particularly well adapted to situations where the availability of data is poor. It is also suggested that the approach would have additional benefits when replicated over a large number of sites as this would allow integration of higher order determinants (e.g. national policies and market incentives) while expanding the applicability and representativity of findings.
Transfer Operators from Optimal Transport Plans for Coherent Set Detection
Creators: name: Koltai, Péter
name: von Lindheim, Johannes
name: Neumayer, Sebastian
name: Steidl, Gabriele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The topic of this study lies in the intersection of two fields. One is related with analyzing transport phenomena in complicated flows.For this purpose, we use so-called coherent sets: non-dispersing, possibly moving regions in the flow's domain. The other is concerned with reconstructing a flow field from observing its action on a measure, which we address by optimal transport. We show that the framework of optimal transport is well suited for delivering the formal requirements on which a coherent-set analysis can be based on. The necessary noise-robustness requirement of coherence can be matched by the computationally efficient concept of unbalanced regularized optimal transport. Moreover, the applied regularization can be interpreted as an optimal way of retrieving the full dynamics given the extremely restricted information of an initial and a final distribution of particles moving according to Brownian motion.
Measure of the path integral in lattice gauge theory
Creators: name: Paradis, F.
name: Kroger, H.
name: Luo, X. Q.
name: Moriarty, K. J. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We show how to construct the measure of the path integral in lattice gauge theory. This measure contains a factor beyond the standard Haar measure. Such factor becomes relevant for the calculation of a single transition amplitude (in contrast to the calculation of ratios of amplitudes). Single amplitudes are required for computation of the partition function and the free energy. For U(1) lattice gauge theory, we present a numerical simulation of the transition amplitude comparing the path integral with the evolution in terms of the Hamiltonian, showing good agreement.
description: 5 pages, 2 figures
Human Pose Estimation on Privacy-Preserving Low-Resolution Depth Images
Creators: name: Srivastav, Vinkle
name: Gangi, Afshin
name: Padoy, Nicolas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Human pose estimation (HPE) is a key building block for developing AI-based context-aware systems inside the operating room (OR). The 24/7 use of images coming from cameras mounted on the OR ceiling can however raise concerns for privacy, even in the case of depth images captured by RGB-D sensors. Being able to solely use low-resolution privacy-preserving images would address these concerns and help scale up the computer-assisted approaches that rely on such data to a larger number of ORs. In this paper, we introduce the problem of HPE on low-resolution depth images and propose an end-to-end solution that integrates a multi-scale super-resolution network with a 2D human pose estimation network. By exploiting intermediate feature-maps generated at different super-resolution, our approach achieves body pose results on low-resolution images (of size 64x48) that are on par with those of an approach trained and tested on full resolution images (of size 640x480).
description: Published at MICCAI-2019. Code is available at https://github.com/CAMMA-public/ORPose-depth
Domain widening
Creators: name: Shank, Scott
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation investigates the phenomenon of domain widening, a process whereby a domain of quantification becomes wider over the span of discourse. The main thesis is that domain widening is not a lexical primitive related to any particular quantifier, but rather that it results from the non-contradictory use of focus on a quantifier with a wide contextual restriction. The asserted proposition does not contradict other alternatives in discourse, but merely cancels a scalar implicature arising from them. In cancelling a scalar implicature, domain widening always satisfies the presuppositions of even. Chapter Two motivates the basic claims of this approach by examining emphatic negative polarity items. Emphatic negative polarity items involve focus on an indefinite determiner. It is argued that focus is used to evoke alternative values for the implicit contextual variable in the determiner. The alternative contextual domains are ordered on a monotonic scale. Since domain widening produces a more informative proposition, it results in the cancellation of a scalar implicature. Supporting evidence for the presence of this scalar implicature is found in Cantonese, where it is shown that the implicature has been conventionalized and is not cancellable with certain polarity items. Chapter Three concentrates on non-generic free choice indefinites in subtrigging and modal contexts. These present a challenge since they appear in non-downward entailing environments, and hence widening is predicted to produce a weaker proposition. A solution is developed by analyzing these as widened specific indefinites. Adopting the view that specific indefinites may be modelled as having singleton domains, it is shown that widening destroys this specificity and furthermore cancels a scalar implicature on a non-monotonic scale of alternatives. Chapter Four investigates domain widening in the case of emphatic universal and distributive operators. The chapter opens by showing that domain widening occurs with universal quantifiers, and goes on to explain why domain widening does not occur with quantifiers not used to make universal generalizations. A new analysis of all is then presented as the domain-widened distributivity operator. This finding is used to explain why the distributivity operator in Cantonese has the same phonological form as a particle meaning even.
Scherk-Schwarz Supersymmetry Breaking for Quasi-localized Matter Fields and Supersymmetry Flavor Violation
Creators: name: Abe, Hiroyuki
name: Choi, Kiwoon
name: Jeong, Kwang-Sik
name: Okumura, Ken-ichi
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the soft supersymmetry breaking parameters induced by the Scherk-Schwarz (SS) boundary condition in 5-dimensional orbifold field theory in which the quark and lepton zero modes are quasi-localized at the orbifold fixed points to generate the hierarchical Yukawa couplings. In such theories, the radion corresponds to a flavon to generate the flavor hierarchy and at the same time plays the role of the messenger of supersymmetry breaking. As a consequence, the resulting soft scalar masses and trilinear $A$-parameters of matter zero modes at the compactification scale are highly flavor-dependent, thereby can lead to dangerous flavor violations at low energy scales. We analyze in detail the low energy flavor violations in SS-dominated supersymmetry breaking scenario under the assumption that the compactification scale is close to the grand unification scale and the 4-dimensional effective theory below the compactification scale is given by the minimal supersymmetric standard model. Our analysis can be applied to any supersymmetry breaking mechanism giving a sizable $F$-component of the radion superfield, e.g. the hidden gaugino condensation model.
description: revtex4, 22 pages, some numerical errors are corrected in phenomenological analysis, main conclusion does not change
Detlef Bald, Dietrich Bonhoeffer. Der Weg in den Widerstand. „Ich bete für die Niederlage meines Landes“
Creators: name: Zoske, Robert M.
Publisher: name: theologie.geschichte
Year: 2024

description:  

 

 

 
description: theologie.geschichte, Bd. 19 (2024)
Determinants of CaMKII Degradation: Autonomous Activation as the Primary Driver and Species-Specific Regulatory Mechanisms Involving the Catalytic and Regulatory Domains
Creators: name: Quasney, Christina
Publisher: name: Brandeis University
Year: 2025
Subjects: subject: CaMKII
subject: Degradation
subject: Proteostasis
subject: Turnover
subject: Neurosciences
subject: FOS: Clinical medicine
subject: Plasticity

description: CaMKII (Ca²⁺/calmodulin-dependent protein kinase II) is a multifunctional enzyme essential for synaptic plasticity, learning, and memory. It is highly enriched within the postsynaptic density (PSD), where its activation and localization are tightly linked to synaptic activity, playing a critical role in processes such as NMDA (N-methyl-d-aspartate) receptor (NMDAR)-dependent long-term potentiation (LTP). The induction of LTP requires CaMKII localization to the synapse via interaction with NMDARs, while its maintenance relies on activation-dependent local translation of CaMKII at the synapse, underscoring its pivotal role in sustaining synaptic function. While these mechanisms of activation, localization, and translation are well characterized, how the proteostasis of such a synaptically enriched protein is maintained remains poorly understood. This gap in understanding drives the need to investigate the mechanisms regulating CaMKII degradation. This study aimed to elucidate the factors influencing CaMKII degradation and their broader regulatory implications. To address this, a combination of biochemical assays, pulse-chase experiments using SNAP-tag technology, and mutagenesis was employed to assess how activation state, oligomerization state, and subunit exchange contribute to CaMKII degradation. Constructs representing distinct activation and oligomerization states were analyzed, along with chimeric proteins derived from Rattus Norvegicus and Drosophila Melanogaster CaMKII homologs, to identify both conserved and species-specific regulatory mechanisms. The findings revealed that neither subunit exchange nor oligomerization state serves as the primary determinant of degradation. Instead, autonomous activation was identified as the critical factor driving CaMKII degradation. Further evidence implicated the ubiquitin-proteasome system (UPS) as the likely pathway responsible for this process. Comparative analysis showed that activation-dependent degradation is conserved across species but occurs more rapidly in Rattus Norvegicus CaMKII (rCaMKll) within HEK293T cells, a difference attributed to non-conserved regulatory elements within the catalytic, regulatory, and linker domains. These results identify autonomous activation as the key determinant of CaMKII degradation and highlight a conserved mechanism that may regulate synaptic protein turnover. Additionally, the identification of species-specific regulatory determinants provides new insights into the structural and functional evolution of CaMKII. Together, these findings enhance our understanding of CaMKll homeostasis and provide insight into how neuronal signaling integrity may be preserved.
Pathways of development in the hillsides of Honduras
Creators: name: Pender, John L.
name: Scherr, Sara J.
name: Duron, Guadalupe
name: Pender, John L.
name: Scherr, Sara J.
name: Duron, Guadalupe
Publisher: name: Unknown
Year: 1999
Subjects: subject: International Development
subject: Natural resources
subject: poverty
subject: technical assistance
subject: agricultural development
subject: Honduras
subject: Land management

description: Based on a survey of 48 communities in central Honduras, this paper identifies the major pathways of development that have been occurring in central Honduras since the mid-1970s, their causes and implications for agricultural productivity, natural resource sustainability, and poverty. Six pathways of development were identified: 1) basic grains expansion communities—where basic grains production is the dominant activity and increased basic grains production has occurred; 2) basic grains stagnation communities—where basic grains production is dominant but has stagnated or declined; 3) coffee expansion communities—where coffee production is important and has been increasing in importance; 4) horticultural expansion communities—where substantial adoption and expansion of horticultural crops has occurred; 5) forestry specialization communities—where forestry activities are important and basic grains production is stagnant or declining; and 6) nonfarm employment communities—where nonfarm employment is a major and increasing source of income. The pathways were distinguished by factors determining comparative advantage, including agricultural potential, population density, and access to markets and technology. Changes in agriculture and resource management differ significantly among these pathways, though poverty was found to decline to a similar extent across all pathways. It appears that the key causes of change in productivity and resource management are different and more pathway-dependent than the key causes of change in poverty, which depends to a great extent on provision of public services. Basic infrastructure and public services are badly needed throughout most of central Honduras, while efforts to address sustainable agricultural development may not be sufficient to solve poverty problems. There may not be large tradeoffs between achieving more sustainable development and reducing poverty, since the causes are different. The findings also imply that a “one-size-fits-all” approach to technical assistance is unlikely to be successful, since different approaches show promise in different pathways.
description: "May 1999." Includes bibliographical references (p. 45-46). Published, in 2000, under same title, in D.R. Lee and C.B. Barrett, eds., Tradeoffs or Synergies? Agricultural Intensification, Economic Development and the Environment.
Adjustable quantum interference oscillations in Sb-doped Bi2Se3 topological insulator nanoribbons
Creators: name: Kim, Hong-Seok
name: Hwang, Tae-Ha
name: Kim, Nam-Hee
name: Hou, Yasen
name: Yu, Dong
name: Sim, H. -S.
name: Doh, Yong-Joo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological insulator (TI) nanoribbons (NRs) provide a unique platform for investigating quantum interference oscillations combined with topological surface states. One-dimensional subbands formed along the perimeter of a TI NR can be modulated by an axial magnetic field, exhibiting Aharonov-Bohm (AB) and Altshuler-Aronov-Spivak (AAS) oscillations of magnetoconductance (MC). Using Sb-doped Bi2Se3 TI NRs, we found that the relative amplitudes of the two quantum oscillations can be tuned by varying the channel length, exhibiting crossover from quasi-ballistic to diffusive transport regimes. The AB and AAS oscillations were discernible even for a 70 micrometer long channel, while only the AB oscillations were observed for a short channel. Analyses based on ensemble-averaged fast Fourier transform of MC curves revealed exponential temperature dependences of the AB and AAS oscillations, from which the circumferential phase-coherence length and thermal length were obtained. Our observations indicate that the channel length in a TI NR can be a useful control knob for tailored quantum interference oscillations, especially for developing topological hybrid quantum devices.
description: 22 pages, 3 figures for main text
Supplementary_material_proof: Reports of pfhrp2/3 deletion mutants in South and Central America, Africa, Middle East and Asia
Creators: name: Thomson, Rebecca
name: Parr, Jonathan
name: Cheng, Qin
name: Chenet, Stella
name: Perkins, Mark D.
name: Cunningham, Jane
Publisher: name: figshare
Year: 2020
Subjects: Parasitology

description: Reports of pfhrp2/3 deletion mutants in South and Central America, Middle East, Africa, Asia 
Physiological and Voice Biomarkers as Predictors of Cognitive Changes in Middle and Later Adulthood
Creators: name: Mahon, Elizabeth Dina
Publisher: name: Brandeis University
Year: 2025
Subjects: subject: Psychology
subject: FOS: Psychology

description: This dissertation explored the predictive relationship between physiological and voice biomarkers and cognitive changes in middle and later adulthood. Study 1 investigated allostatic load (AL), a composite measure of multisystem physiological dysregulation, as a predictor of cognitive changes over approximately 10 years in healthy middle-aged and older adults from a subsample of the national Midlife in the United States (MIDUS) study. While previous research has primarily focused on cross-sectional analyses, this study investigated the longitudinal relationship of AL to cognitive performance over a decade. Findings revealed that higher AL was associated with greater declines in cognitive domains such as verbal fluency, inductive reasoning, and processing speed. These results suggest that identifying early signs of preclinical physiological risk factors in midlife could present opportunities to reduce or delay cognitive declines. Study 2 evaluated the role of prosody voice biomarkers as predictors of ~10-year cognitive changes within a subsample of the MIDUS study participants. Previous research by Mahon & Lachman (2022) found that prosody voice measured at the same time as the cognitive outcomes was related to changes in word list recall, verbal fluency, and attention switching/inhibitory control reaction time. This study analyzed prosody voice metrics 8 years before the cognitive outcomes. Results indicated that higher jitter, pitch, number of voice breaks, as well as lower shimmer and pulse, predicted cognitive changes over a decade in word list recall, working memory, and attention switching/inhibitory control reaction time. Natural and easily accessible voice metrics are a valuable complement to physiological biomarkers, offering a non-invasive approach to detecting early cognitive declines and mitigating the risk of impairment through longitudinal monitoring. Study 3 investigated the relationship between prosody voice biomarkers, derived from spontaneous speech, and cognitive diagnostic assessments in clinical and unimpaired samples from the University of Pittsburgh Alzheimer’s Disease Research Center. In this sample, higher jitter, pulse, amplitude, pitch, and number of voice breaks were associated with concurrent and future cognitive impairment diagnoses over 3 years. Across the findings of Studies 2 and 3, high jitter was the most consistent predictor of cognitive declines and impairment, controlling for demographics and neurological disorders. Assessing prosody voice may facilitate the early identification of dementia risk, enabling timely intervention and treatment implementation. In summary, this dissertation highlights the potential of physiological and vocal biomarkers as early indicators of cognitive change, offering a practical framework for identifying at-risk individuals and supporting interventions to slow or prevent cognitive impairment.
Anatya guttata Erichson 1848
Creators: name: DeMarmels, Jurg
Publisher: name: Zenodo
Year: 1992
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Libellulidae
Anatya
Anatya guttata

description: Anatya guttata (Erichson. 1848) Figures 58-60 Material. 7♂, 5♀ Base Camp. Remarks. The species was common in the forest. Copulae were also observed. Males with long anal appendages (" guttata ") and others with short ones ("normalis" Calvert) (Figs. 58-59) thrived side by side and I consider them forms of the same species. No other difference can be detected in the males. and none in the females. An intermediate male from Tachira State is illustrated in Fig. 60.
description: Published as part of DeMarmels, Jurg, 1992, Dragonflies (Odonata) From The Sierras Of Tapirapeco And Unturan, In The Extreme South Of Venezuela, pp. 57-78 in Acta Biologica Venezuelica 14 (1) on page 66, DOI: 10.5281/zenodo.3266063
Antarctic tourism: Environmental concerns and the importance of Antarctica's natural attractions for tourists
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Consumer/Household Economics
subject: Environmental Economics and Policy
subject: Antarctica
subject: Antarctica’s natural attractions
subject: cruise ships in Antarctica
subject: environmental conservation in Antarctica
subject: tourism in Antarctica
subject: wildlife conservation in Antarctica.

description: This article provides general background on the development of tourism in Antarctica and environmental concerns raised by it. However, the major part of it reports on and interprets the results from a survey of tourists visiting Antarctica on a cruise ship. Particular attention is given to the socioeconomic profiles of these tourists, their stated level of knowledge of Antarctica before and after their visit, the relative importance to these visitors of seeing different species of Antarctic wildlife and whether or not the opportunity of seeing Antarctic wildlife was of critical importance for their decision to visit Antarctica. The relative valuation by the sampled tourist of features of their Antarctic cruise is explored along with changes in their attitude to nature conservation following their visit to Antarctica. The opinions of respondents about environmental issues involving Antarctica are summarised and their attitudes towards increased tourism in Antarctica are outlined. The article concludes with a discussion of environmental policy issues raised by the development of tourism in Antarctica.
Crossed products by endomorphisms, vector bundles and group duality, II
Creators: name: Vasselli, Ezio
Publisher: name: arXiv
Year: 2004
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L05, 46L08, 22D35

description: We study C*-algebra endomorphims which are special in a weaker sense w.r.t. the notion introduced by Doplicher and Roberts. We assign to such endomorphisms a geometrical invariant, representing a cohomological obstruction for them to be special in the usual sense. Moreover, we construct the crossed product of a C*-algebra by the action of the dual of a (nonabelian, noncompact) group of vector bundle automorphisms. These crossed products supply a class of examples for such generalized special endomorphisms.
description: 33 pages, uses xy.sty; the sequel of math.OA/0301214 v4
Discourses of immigration Windrush event
Creators: name: Lahiri, Indrani
Publisher: name: De Montfort University
Year: 2020
Subjects: subject: 160810 Urban Sociology and Community Studies
subject: FOS: Sociology
subject: 80503 Networking and Communications
subject: FOS: Computer and information sciences
subject: 160503 Communications and Media Policy
subject: FOS: Political science

description: Thu, June 27, 2019 12:00 PM – 5:30 PM

https://www.meccsa.org.uk/nl/three-d-issue-32-discourses-of-immigration-and-citizenship-from-windrush-to-brexit/

The first REaPN event under its new Chair Mita Lad (and Deputy, Dr. Noor Halabi) took place at De Montfort University on 27 June 2019, organised by previous Deputy of the network, Gurvinder Aujla-Sidhu. Across the afternoon the conference heard a selection of timely papers alongside fruitful discussion, culminating with the bringing together of ideas from keynote speaker Patrick Vernon OBE.

https://www.windrushday.org.uk/windrush-day-events-2019/windrush-events-east-midlands/discourses-of-windrush/
Limits on a Dynamically Varying Fine Structure Constant
Creators: name: Angstmann, E. J.
name: Flambaum, V. V.
name: Karshenboim, S. G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We show that using the modified form of the Dirac Hamiltonian as suggested by Bekenstein, does not affect the analysis in [1-4] of QSO data pertaining to a measurement of alpha variation. We obtain the present time limit on Bekenstein's parameter, tan^{2}chi =(0.2 \pm 0.7)\times10^{-6}, from the measurement of the hydrogen 2p fine structure using value of alpha obtained from different experiments.
description: references added, typos corrected
Sustainable Development and Intergenerational Equity: Issues Relevant to India and Globally
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Consumer/Household Economics
subject: Environmental Economics and Policy
subject: Institutional and Behavioral Economics
subject: International Development
subject: China
subject: economic growth
subject: India
subject: intergenerational equity
subject: Rawls’ principle of justice
subject: sustainable economic development

description: As outlined, recurring concerns have surfaced since the 1700s that economic growth may prove to be unsustainable. These concerns have been expressed again and have intensified in recent decades but their foundation differs from that of Malthus. The rapid economic growth of China and India have added to these worries. Recent discussions by economists of the desirability of achieving sustainable economic development have mainly focused on measures to attain intergenerational equity in resource use and the dominant view is that each succeeding generation should be at least as well-off as its predecessor. While this is said to be an implication of Rawls’ principle of justice, this dominant rule does not fully reflect Rawls’ principle and it also can violate the Paretian improvement criterion. However, the full application of Rawls’ principle leads to questionable results. For example, it assumes a greater degree of risk-aversion than seems likely in practice and it ignores the importance of intergenerational altruism, for example, the sacrifices that parents willingly make for their children. Rawls’ principle also displays cosmological bias which results in it being at odds with the teachings of Hinduism and Buddhism. The mainstream stance on sustainable economic development does not appose economic growth. However, another neo-Malthusian point of view, expressed for example by Daly and Georgescu-Roegen, does. It is opposed to an increase in levels of global material production, that is, increased throughput of natural resources for economic production. These views are given some attention. Even if there is agreement about what constitutes a desirable path for economic development, uncertainty limits the scope for identifying measures that will achieve it. That raises the question of how far into the future should existing generations attempt to sustain economic development. This is discussed. In conclusion, it is pointed out that the nature of market systems and international relations make it very difficult to implement policies that can significantly reduce global economic growth and foster sustainable economic development. These problems are global problems and no country, India and China included, can afford to ignore them.
Self-supervision on Unlabelled OR Data for Multi-person 2D/3D Human Pose Estimation
Creators: name: Srivastav, Vinkle
name: Gangi, Afshin
name: Padoy, Nicolas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: 2D/3D human pose estimation is needed to develop novel intelligent tools for the operating room that can analyze and support the clinical activities. The lack of annotated data and the complexity of state-of-the-art pose estimation approaches limit, however, the deployment of such techniques inside the OR. In this work, we propose to use knowledge distillation in a teacher/student framework to harness the knowledge present in a large-scale non-annotated dataset and in an accurate but complex multi-stage teacher network to train a lightweight network for joint 2D/3D pose estimation. The teacher network also exploits the unlabeled data to generate both hard and soft labels useful in improving the student predictions. The easily deployable network trained using this effective self-supervision strategy performs on par with the teacher network on \emph{MVOR+}, an extension of the public MVOR dataset where all persons have been fully annotated, thus providing a viable solution for real-time 2D/3D human pose estimation in the OR.
description: Published at MICCAI 2020. Code is available at https://github.com/CAMMA-public/ORPose-Color
The Pin-Striped Philanthropists: The Musical Economy of the Huntsville Prison Rodeo/Radio, 1931-1986
Creators: name: Short, John David
Publisher: name: Brandeis University
Year: 2025
Subjects: subject: Carceral Education
subject: Carceral Studies
subject: Prison Economies
subject: Prison Music
subject: Texas History
subject: Music
subject: Economic Theory
subject: FOS: Economics and business

description: Built shortly after Texas’ annexation to the Union, the State Penitentiary at Huntsville, the only remaining Confederacy-era prison in the United States and Texas’ first integrated state institution, is a haunting cultural landmark. Some famous inmates have included James “Iron head” Baker, David Crosby, and Pimp C. Between 1931 and 1986, Huntsville hosted a prison rodeo that featured performers like Johnny Cash, Loretta Lynn, and Willie Nelson. The rodeo’s proceeds, boosted by celebrity appearances and original music produced in-house by inmate bands, not only funded Huntsville Penitentiary’s recreational programing but also stimulated Huntsville’s economy. Overlapping with the rodeo, between 1938 and 1958, Huntsville inmates performed on a public radio program, WBAP’s Thirty Minutes Behind the Walls, to broadcast the improvements and innovations of the Texas carceral system. Because Huntsville prison used inmate artists as cultural laborers, I analyze Huntsville prison’s musical life within this thesis as what Fernand Braudel calls an anti-market: meaning that these prison rodeo/radio economies are purposefully segregated from normal market processes. Music in carceral settings is often characterized as conveying expressions of resistance or liberation: however, I show Huntsville Prison’s musical programming challenges this assumption. By incorporating interviews, prison journals, warden memoirs, Huntsville prison’s historiography, a codex of inmate performers, carceral theory, and several generations of music produced in and out of the prison—I show that interpreting Huntsville as an anti-market helps us understand that recreational music programs that enable inmates to publicly demonstrate their rehabilitation incentivize compliant behavior that lubricates an anti-market.
The Competitiveness of Small Household Pig Producers in Vietnam: Significant Research and Policy Findings from an ACIAR-sponsored Study and their Limitations
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Farm Management
subject: Food Consumption/Nutrition/Food Safety
subject: International Relations/Trade
subject: Livestock Production/Industries
subject: economic efficiency in pig production
subject: economies of scale in pig production
subject: gender and rural employment
subject: household agricultural production
subject: livestock development policy
subject: natural trade protection
subject: specialization in agricultural products
subject: Vietnam’s pig industry.

description: The preamble to this paper highlights some of the major policy issues facing Vietnam as far as its supply of pork is concerned, in particular, the problem of its demand for pork rising at a faster rate than its supply. Some relevant background to this research project is provided by outlining selected features of Vietnam’s pig industry. Then the main findings (in the view of the author) from this ACIAR-funded research are presented. These results include (1) natural protection given to Vietnam’s pig producers from imports as a result of the nature of the preferences of Vietnamese consumers: (2) the importance of household labour, especially that provided by females, in the husbandry of pigs held by households; (3) the existence, or otherwise, of scale economies as a function of the number of pigs held by households and the economic efficiency of small producers, (4) the import dependence for pig food of Vietnam’s pig industry and the way in which it varies with the number of pigs kept by households; (5) specialization in pig production, (6) regional differences in the economics of pig production; (7) economic discrimination in the supply of inputs to household producers of pigs and in their sale of pigs; (8) the size of pig-holdings and the use of professional services, such as veterinary services and extension services; and (9) findings about miscellaneous matters, such as the genetic composition of the pig stock. Scope for future research in relation to these aspects is also highlighted, and the need is raised for considering the economics of increasing quality standards and certifying the quality of pork. The economics of increasing the scale of pig producing units is given particular attention. Vietnam’s policy options for improving the balance between its demand for pork and its supply are considered and the important role that household (small producers) have and can play in this regard are highlighted.
Supplementary_material_proof: Reports of pfhrp2/3 deletion mutants in South and Central America, Africa, Middle East and Asia
Creators: name: Cunningham, Jane
name: Thomson, Rebecca
name: Perkins, Mark D.
name: Chenet, Stella
name: Parr, Jonathan
name: Cheng, Qin
Publisher: name: figshare
Year: 2020
Subjects: Parasitology

description: Reports of pfhrp2/3 deletion mutants in South and Central America, Middle East, Africa, Asia 
Opinion dynamics: rise and fall of political parties
Creators: name: Ben-Naim, E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We analyze the evolution of political organizations using a model in which agents change their opinions via two competing mechanisms. Two agents may interact and reach consensus, and additionally, individual agents may spontaneously change their opinions by a random, diffusive process. We find three distinct possibilities. For strong diffusion, the distribution of opinions is uniform and no political organizations (parties) are formed. For weak diffusion, parties do form and furthermore, the political landscape continually evolves as small parties merge into larger ones. Without diffusion, a pattern develops: parties have the same size and they possess equal niches. These phenomena are analyzed using pattern formation and scaling techniques.
description: 5 pages, 5 figures
Antiferromagnetic Skyrmions and Skyrmion Density Wave in Rashba Hund's Insulator
Creators: name: Mukherjee, Arnob
name: Kathyat, Deepak S.
name: Kumar, Sanjeev
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discover magnetic phases hosting highly-elusive and technologically important antiferromagnetic skyrmion quasiparicles in a model for Rashba-coupled Hund's insulator. The results are based on unbiased simulations of a classical superexchange model derived, in this work, from a realistic microscopic electronic Hamiltonian. We also discover a novel skyrmion density wave groundstate characterized by a ($Q,Q$) modulation in the local skyrmion density map. A unique inhomogeneous state characterized by a circular pattern in spin structure factor and filamentary real-space textures is identified as the parent of sparse antiferromagnetic skyrmions. We predict that the magnetic states reported here can be realized in thin films of multiorbital systems involving $4d$ or $5d$ transition metals.
description: Supplementary material included
Animal Health Economics. What Can It Do? What Are the Big Questions?
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Farm Management
subject: Health Economics and Policy
subject: Livestock Production/Industries
subject: Public Economics
subject: Animal health economics
subject: diseases
subject: health economics
subject: information economics
subject: precautionary principle
subject: public economics
subject: zoonoses

description: It is argued that while considerable development of animal health economics has occurred in recent decades, it has not yet achieved its potential coverage. It has been mostly applied to livestock, particularly livestock used for commerce, and its application to a range of other animals has been relatively neglected. Extending its coverage also requires widening the type of objectives taken into account in the analysis. Furthermore, the main focus of animal health economics has been on the economics of controlling and managing the occurrence of diseases. The economic role of genetics, the environment, nutrition and the comfort of animals in their health ought to be given greater attention. In the case of zoonoses, the economic analysis should be extended to take into account human health. Those studying animal health economics need to make decisions in their analysis about its spatial dimensions, its time dimensions, and the stakeholders to be considered. They must also take into account health chains and make allowances for risk and uncertainty. The economics of knowledge (including, for example, information economics and research and development) is worthy of more attention in animal health economics. Many important questions arise in animal health economics but two big ones might be: (1) what role should governments play in managing animal health and how should their involvement be financed; and (2) what precautions for maintaining animal health are economic? In conclusion, some reasons are suggested for animal health economics being unable to achieve its potential coverage.
Information Behavior During the Covid-19 Crisis in German-Speaking Countries
Creators: name: Dreisiebner, Stefan
name: März, Sophie
name: Mandl, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: This paper explores the impact of the Covid-19 crisis at the level of individual information behavior, based on an online survey among 308 participants from the German-speaking countries Austria, Germany and Switzerland in April and May 2020. The results show first that the Covid-19 crisis has led to an increased demand for reliable information. This goes alongside a significant increased use of public broadcasting, newspapers and information provided by public organizations. Second, the majority (84%) of the participants reported being satisfied with the information supply during the Covid-19 crisis. Participants who were less satisfied with the information supply used reliable sources significantly less frequently, specifically public television, national newspapers and information provided by public organizations. Third, the amount of Covid-19-related information led some participants to a feeling of information overload, which resulted in a reduction of information seeking and media use.
description: This is an author-created, un-copyedited version of an article accepted for publication in Journal of Documentation