cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Are preferences stated in web vs. personal interviews different? A comparison of willingness to pay results for a large multi-country study of the Baltic Sea eutrophication reduction
Creators: name: Zawojska, Ewa
name: Czajkowski, Mikotaj
name: Zawojska, Ewa
name: Czajkowski, Mikotaj
Publisher: name: Unknown
Year: 2017
Subjects: subject: Environmental Economics and Policy
subject: Institutional and Behavioral Economics
subject: Research Methods/ Statistical Methods
subject: data collection
subject: survey administration
subject: mode effect
subject: Computer-Assisted Web Interviews (CAWI)
subject: Computer-Assisted Personal Interviews (CAPI)

description: We investigate the prevailing view in the stated preference literature that the data collection mode does not significantly affect the value estimates. Based on data from Computer-Assisted Web Interviews and Computer-Assisted Personal Interviews aimed at assessing the social benefits for Poland from meeting the nutrient load reduction targets defined in the HELCOM’s Baltic Sea Action Plan (2007), we find that the value estimates obtained from the two modes differ significantly. This evidences the existence of a “pure” mode effect as we control for socio-demographic differences between the web-interviewed and personally-interviewed samples by weighting the observations. The relative difference in the derived values between the two modes is used to update the estimates of the economic values of reducing nutrient loadings to the Baltic Sea provided by Ahtiainen et al. (2014) for every Baltic Sea country. In addition to controlling for the mode effect (as different, web and personal, modes were used in different countries), we examine 18 alternative model specifications to find the distribution that captures best the payment-card willingness-to-pay responses. Overall, our study illustrates the extent of the impact that the choice of a data collection mode can have on valuation results.
The Heun-Racah and Heun-Bannai-Ito algebras
Creators: name: Bergeron, Geoffroy
name: Crampé, Nicolas
name: Tsujimoto, Satoshi
name: Vinet, Luc
name: Zhedanov, Alexei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 34M15, 47B37, 33C45, 93B25

description: This paper introduces and studies the Heun-Racah and Heun-Bannai-Ito algebras abstractly and establishes the relation between these new algebraic structures and generalized Heun-type operators derived from the notion of algebraic Heun operators in the case of the Racah and Bannai-Ito algebras.
description: 18 pages
Reaction-diffusion spatial modeling of COVID-19: Greece and Andalusia as case examples
Creators: name: Kevrekidis, P. G.
name: Cuevas-Maraver, J.
name: Drossinos, Y.
name: Rapti, Z.
name: Kevrekidis, G. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We examine the spatial modeling of the outbreak of COVID-19 in two regions: the autonomous community of Andalusia in Spain and the mainland of Greece. We start with a 0D compartmental epidemiological model consisting of Susceptible, Exposed, Asymptomatic, (symptomatically) Infected, Hospitalized, Recovered, and deceased populations. We emphasize the importance of the viral latent period and the key role of an asymptomatic population. We optimize model parameters for both regions by comparing predictions to the cumulative number of infected and total number of deaths via minimizing the $\ell^2$ norm of the difference between predictions and observed data. We consider the sensitivity of model predictions on reasonable variations of model parameters and initial conditions, addressing issues of parameter identifiability. We model both pre-quarantine and post-quarantine evolution of the epidemic by a time-dependent change of the viral transmission rates that arises in response to containment measures. Subsequently, a spatially distributed version of the 0D model in the form of reaction-diffusion equations is developed. We consider that, after an initial localized seeding of the infection, its spread is governed by the diffusion (and 0D model "reactions") of the asymptomatic and symptomatically infected populations, which decrease with the imposed restrictive measures. We inserted the maps of the two regions, and we imported population-density data into COMSOL, which was subsequently used to solve numerically the model PDEs. Upon discussing how to adapt the 0D model to this spatial setting, we show that these models bear significant potential towards capturing both the well-mixed, 0D description and the spatial expansion of the pandemic in the two regions. Veins of potential refinement of the model assumptions towards future work are also explored.
description: 28 pages, 16 figures and 2 movies
Ligophorus Mendoza-Garfias & García-Prieto & León 2017
Creators: name: Mendoza-Garfias, Berenit
name: García-Prieto, Luis
name: León, Gerardo Pérez-Ponce De
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Monogenea
Dactylogyridea
Dactylogyridae
Ligophorus

description: Ligophorus sp.*
HOSTS. — Actinopterygii (gills).
 GEOGRAPHIC DISTRIBUTION. — Quintan Roo. Xcalak: Mugil cephalus (Hernández-Olascoaga & González-Solís 2006).
SPECIMENS IN COLLECTIONS. — None.
description: Published as part of Mendoza-Garfias, Berenit, García-Prieto, Luis & León, Gerardo Pérez-Ponce De, 2017, Checklist of the Monogenea (Platyhelminthes) parasitic in Mexican aquatic vertebrates, pp. 501-598 in Zoosystema 39 (4) on pages 521-522, DOI: 10.5252/z2017n4a5, http://zenodo.org/record/4578694
Microbialite formation in seawater of increased alkalinity, Satonda Crater Lake, Indonesia - Reply
Creators: name: Arp, Gernot
name: Reimer, Andreas
name: Reitner, Joachim
Publisher: name: FID GEO
Year: 2004

description: Our paper (Arp et al. 2003) revises previous studies of Kaz´mierczak and Kempe (1990, 1992), Kempe and Kaz´mierczak (1990a, 1990b, 1993), and Kempe et al. (1996, 1997) on Lake Satonda reefs with regard to biofilm calcification and microbialite formation. We confirm that the transfer of bottom waters of increased alkalinity (due to sulfate reduction) to shallow water layers (mixolimnion) principally can support or cause biofilm calcification and microbialite formation in shallow waters (as suggested by Kempe 1990). However, their two-stage model of microbialite formation in Lake Satonda, which claims that superficial in vivo permineralization of coccoid cyanobacterial colonies by high-Mg calcite is followed by internal fibrous aragonite growth due to anaerobic decay of the entombed colonies to form microstromatolites (Kaz´mierczak and Kempe 1990) as well as Wetheredella-like structures (Kaz´mierczak and Kempe 1992) is a theoretical construct without supporting evidence from data and observations from Satonda crater lake. Also, the comparison of Lake Satonda stromatolitelike encrustations on green algae with early Paleozoic stromatoporoids by Kaz´mierczak and Kempe (1990) lacks—in our opinion—any supporting evidence. In their discussion, Kaz´mierczak and Kempe reiterate allegations seemingly supported by images and data. At a closer look, results obtained from inadequately treated samples (air drying, etching fractures, or cutting planes), a tendentious identification of coccoid structures, analytical failures (basic mineralogy from EDX measurements), and biased consideration of data (supersaturation) results in theoretical misconceptions of post-mortem calcification of degrading cyanobacterial colonies. Our positions and arguments follow.
Analysis of the discount rate in project evaluation
Creators: name: Ortiz, Francisco
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 350710
subject: Organisational behaviour

description: Este artículo tiene como objetivo examinar las diversas teorías de las tasas de descuento y su aplicación en la evaluación económica de proyectos de inversión. Se utilizaron métodos cualitativos para analizar diferentes métodos para determinar una tasa de descuento adecuada para comparar los cambios en los flujos de efectivo del proyecto a lo largo del tiempo. Los resultados muestran que la tasa de descuento real ponderada entre el costo del capital social y el costo del capital externo proporciona una mejor aproximación.
Starburst activity in the host galaxy of the z=2.58 quasar J1409+5628
Creators: name: Beelen, A.
name: Cox, P.
name: Pety, J.
name: Carilli, C. L.
name: Bertoldi, F.
name: Momjian, E.
name: Omont, A.
name: Petitjean, P.
name: Petric, A. O.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of CO emission from the optically luminous, radio-quiet quasar J140955.5+562827, at a redshift z_CO =2.583. We also present VLA continuum mapping results and VLBA high spatial resolution observations at 1.4 GHz. Both the CO(3-2) and CO(7-6) emission lines are detected using the IRAM Plateau de Bure interferometer. The 3-2/7-6 line luminosity ratio is about 1/3 indicating the presence of warm and dense molecular gas with an estimated mass of 6x10^10 Msun. The infrared-to-CO luminosity ratio is L_FIR/L'_CO(1-0) \approx 500 Lsun (Kkms^-1 pc^2)^-1,comparable with values found for other high-z sources where CO line emission is seen. J1409+5628 is detected using the VLA with a 1.4 GHz rest-frame luminosity density of 4.0x10^25 W Hz^-1. The radio to far-infrared ratio, q, has a value of 2.0 which is consistent with the values found in star forming galaxies. At the 30 mas resolution of the VLBA, J1409+5628 is not detected with a 4 sigma upper limit to the surface brightness of 0.29 mJy beam^-1. This implies a limit to the intrinsic brightness temperature of 2x10^5 K at 8 GHz, typical for nuclear starbursts and two or more orders of magnitude weaker than typical radio-loud active galactic nuclei. Both the properties of the CO line emission and the radio emission from J1409+5628 are therefore consistent with those expected for a star forming galaxy. In J1409+5628 young massive stars are the dominant source of dust heating, accounting for most of the infrared luminosity, and the massive reservoir of molecular gas can sustain the star formation rate of a few 1000 \Msun yr^-1 implied by the far-infrared luminosity for about 10 million years.
description: 7 pages, 6 figures, Accepted for publication in A&A, figures available in color
Synthetic gauge field and chiral physics on two-leg superconducting circuits
Creators: name: Guan, Xin
name: Feng, Yanlin
name: Xue, Zheng-Yuan
name: Chen, Gang
name: Jia, Suotang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Gauge field is essential for exploring novel phenomena in modern physics. However, it has not been realized in the recent breakthrough experiment about two-leg superconducting circuits with transmon qubits [Phys. Rev. Lett. 123, 050502 (2019)]. Here we present an experimentally-feasible method to achieve the synthetic gauge field by introducing ac microwave driving in each qubit. In particular, the effective magnetic flux per plaquette achieved can be tuned independently by properly choosing the driving phases. Moreover, the ground-state chiral currents for the single- and two-qubit excitations are obtained and the Meissner-vortex phase transition is found. In the Meissner phase, the ground-state chiral current increases as the magnetic flux increases, while it decreases in the vortex phase. In addition, the chiral dynamics that depends crucially on the initial state of the system is also revealed. Finally, the possible experimental observations of the chiral current and dynamics are addressed. Therefore, our results provide a new route to explore novel many-body properties induced by the interplay of gauge field, two-leg hoppings and interaction of photons on superconducting circuits.
description: 8 pages and 7 figures
FARMER FEEDBACK REPORT: INPUT USE (SEEDS, FERTILIZERS, AND HERBICIDES) ON SORGHUM AND MAIZE BY FAMILY FARM ENTERPRISES IN THE SUDANIAN SAVANNA OF MALI
RESEARCH REPORT ON PRODUCER RESEARCH RESULTS: USE OF INPUTS (SEEDS, FERTILIZERS AND HERBICIDES) ON SORGHUM AND MAIZE BY FAMILY AGRICULTURAL UNDERTAKINGS IN THE SUDANIAN SAVANA OF MALI
Creators: name: Keita, Naman
name: Assima, Amidou
name: Kergna, Alpha Oumar
name: Keita, Naman
name: Assima, Amidou
name: Kergna, Alpha Oumar
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: International Development
subject: Mali
subject: sorghum
subject: fertilizers
subject: herbicides
subject: maize

description: To develop sound agricultural policies, policymakers need accurate empirical evidence on the conditions prevailing in the field that will help document the situation and the impact of ongoing programs through the use of data. Farmers who are testing new technologies and are the primary beneficiaries of agricultural subsidies are fundamental sources information for policymakers. Most farm surveys require hours of preparation and implementation but their findings are not always communicated to respondents for validation purposes. We consider this a loss—since the experts who are the most qualified to validate these findings are the farmers themselves. Thus, farmers are not always given the opportunity to ask questions to researchers and assist in the interpretation of survey findings.
On the Grassmann Graph of Linear Codes
Creators: name: Cardinali, Ilaria
name: Giuzzi, Luca
name: Kwiatkowski, Mariusz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 51E22, 94B27

description: Let $Γ(n,k)$ be the Grassmann graph formed by the $k$-dimensional subspaces of a vector space of dimension $n$ over a field $\mathbb F$ and, for $t\in \mathbb{N}\setminus \{0\}$, let $Δ_t(n,k)$ be the subgraph of $Γ(n,k)$ formed by the set of linear $[n,k]$-codes having minimum dual distance at least $t+1$. We show that if $|{\mathbb F}|\geq{n\choose t}$ then $Δ_t(n,k)$ is connected and it is isometrically embedded in $Γ(n,k)$. This generalizes some results of [M. Kwiatkowski, M. Pankov, "On the distance between linear codes", Finite Fields Appl. 39 (2016), 251--263] and [M. Kwiatkowski, M. Pankov, A. Pasini, "The graphs of projective codes" Finite Fields Appl. 54 (2018), 15--29].
description: 13 pages/final version
Additional file 1 of “PROUD to have been involved”: an evaluation of participant and community involvement in the PROUD HIV prevention trial
Creators: name: Mitzy Gafos
name: South, Annabelle
name: Bec Hanley
name: Brodnicki, Elizabeth
name: Hodson, Matthew
name: McCormack, Sheena
name: T. Charles Witzel
name: Harbottle, Justin
name: Vale, Claire
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Science Policy
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. GRIPP2 Long form checklist.
Fractal Dimensions in Perceptual Color Space: A Comparison Study Using Jackson Pollock's Art
Creators: name: Mureika, J. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The fractal dimensions of color-specific paint patterns in various Jackson Pollock paintings are calculated using a filtering process which models perceptual response to color differences ($\Lab$ color space). The advantage of the $\Lab$ space filtering method over traditional RGB spaces is that the former is a perceptually-uniform (metric) space, leading to a more consistent definition of ``perceptually different'' colors. It is determined that the RGB filtering method underestimates the perceived fractal dimension of lighter colored patterns but not of darker ones, if the same selection criteria is applied to each. Implications of the findings to Fechner's 'Principle of the Aesthetic Middle' and Berlyne's work on perception of complexity are discussed.
description: 21 pp LaTeX; two postscript figures
Polyphase exhumation in the western Qinling Mountains, China: Rapid Early Cretaceous cooling along a lithospheric-scale tear fault and pulsed Cenozoic uplift
Creators: name: Heberer, Bianca
name: Anzenbacher, Thomas
name: Neubauer, Franz
name: Genser, Johann
name: Dong, Yunpeng
name: Dunkl, István
Publisher: name: FID GEO
Year: 2014

description: The western sector of the Qinling–Dabie orogenic belt plays a key role in both Late Jurassic to Early Cretaceous “Yanshanian” intracontinental tectonics and Cenozoic lateral escape triggered by India–Asia collision. The Taibai granite in the northern Qinling Mountains is located at the westernmost tip of a Yanshanian granite belt. It consists of multiple intrusions, constrained by new Late Jurassic and Early Cretaceous U–Pb zircon ages (156 ± 3 Ma and 124 ± 1 Ma). Applying various geochronometers (40Ar/39Ar on hornblende, biotite and K-feldspar, apatite fission-track, apatite [U–Th–Sm]/He) along a vertical profile of the Taibai Mountain refines the cooling and exhumation history. The new age constraints record the prolonged pre-Cenozoic intracontinental deformation as well as the cooling history mostly related to India–Asia collision. We detected rapid cooling for the Taibai granite from ca. 800 to 100 °C during Early Cretaceous (ca. 123 to 100 Ma) followed by a period of slow cooling from ca. 100 Ma to ca. 25 Ma, and pulsed exhumation of the low-relief Cretaceous peneplain during Cenozoic times. We interpret the Early Cretaceous rapid cooling and exhumation as a result from activity along the southern sinistral lithospheric scale tear fault of the recently postulated intracontinental subduction of the Archean/Palaeoproterozoic North China Block beneath the Alashan Block. A Late Oligocene to Early Miocene cooling phase might be triggered either by the lateral motion during India–Asia collision and/or the Pacific subduction zone. Late Miocene intensified cooling is ascribed to uplift of the Tibetan Plateau.
Measuring polynomial functions of states
Creators: name: Brun, Todd A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper I show that any $m$th-degree polynomial function of the elements of the density matrix $ρ$ can be determined by finding the expectation value of an observable on $m$ copies of $ρ$, without performing state tomography. Since a circuit exists which can approximate the measurement of any observable, in principle one can find a circuit which will estimate any such polynomial function by averaging over many runs. I construct some simple examples and compare these results to existing procedures.
description: Minor revisions in response to referee comments
Intimidade e Emoções num Centro de Acolhimento de Refugiados em Portugal
Creators: name: , Lemos
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Antropologia
subject: Intimidade
subject: Emoções
subject: Identidade pessoal
subject: Refugiados
subject: Digital
subject: Intimacy
subject: Emotions
subject: Personal indentity
subject: Refugees
subject: Anthropology
subject: FOS: Sociology

description: Os universos partilhados pelos refugiados levam à criação de práticas e estratégias que visam o sucesso do seu trajeto de fuga e consequente sobrevivência. À luz de Papadopoulos & Tsianos (2013) estas práticas quotidianas as quais designam por “mobile commons” podem criar economias informais, partilha de informações cruciais durante a viagem, estruturas de conectividade, acesso a entidades que promovem os seus direitos e a uma política do cuidar do outro. Atos estes que são recriados e reconfigurados de forma que estas pessoas idealizem a sua mobilidade. Perante esta mobilidade reinventada, considero que, e em contexto de centro de acolhimento de refugiados, o espaço digital mediado pelo smartphone é reconfigurado não só no sentido de se enquadrarem nas “mobile commons” que Papadopoulos & Tsianos (2013) referem, como também no sentido de colmatarem e expressarem necessidades afetivo-emocionais e identitárias dos refugiados. Este revela-se palco de transgressão do poder simbólico, passível de criar espaços privados e seguros onde existe partilha da intimidade, das emoções e questões pessoais e identitárias são expressas livres de grandes riscos levando a uma atenuação do sentimento de solidão num ambiente hostil. Desta forma, compreendo a maneira como os refugiados exprimem as suas diferentes emoções como uma linguagem por si criada que permite a análise dos sentidos e estratégias que imprimem às suas vidas em mobilidade.
description: {"references": ["UIDB/04038/2020"]}
AWARENESS OF INTERVENTIONAL RADIOLOGY AMONG MEDICAL STUDENTS ENROLLED IN DIFFERENT CURRICULA AT WESTERN REGION MEDICAL SCHOOLS IN SAUDI ARABIA
Creators: name: Yahea Alzahrani, Abdullah S. Basfar, Mohammed A.  Al Thomali, Haneen Rahbini, Saja A. Alotaibi, Mohammad Ahmed, Mansour N. Alotaibi
Publisher: name: Zenodo
Year: 2024

description: Background: Modern medicine depends heavily on interventional radiology (IR), yet there needs to be more skilled interventional radiologists to meet the demand. However, many undergraduate medical students are unfamiliar with IR's principles, techniques, and strategies. Medical students must be exposed to IR to become future physicians and interventional radiologists.

Objectives: To compare different curriculums regarding awareness and knowledge about IR among undergraduate medical students in Western region medical schools in Saudi Arabia.

Subjects and methods: A multi-site descriptive, cross-sectional study was conducted among fifth- and sixth-year medical students. A valid and reliable questionnaire was used to collect the data.

Results: The study included 803 medical students. Males represented 54.5% of them. Their age ranged between 22 and 26 years, with an arithmetic mean of 23.3 and a standard deviation of 0.8 years. The history of completing or planning to complete an elective in radiology was reported by 15.9% of the participants. In comparison, a history of considering a career in diagnostic or interventional radiology was reported by 15.7% and 16.1% of the participants, respectively. Concerning reasons for not being sure about considering a career in interventional radiology among the participants, the most commonly reported was needing more knowledge about IR (44.3%), followed by finding it not interesting (31.3%). 46.8% of students expressed good knowledge about IR, whereas 35.1% expressed excellent knowledge. Male (p=0.018), older (p<0.001), sixth academic level students (p=0.001), those with a higher GPA (p<0.001), students of King Abdulaziz University in Jeddah (p<0.001), those who reported completing or planning to complete an elective in radiology (p=0.008) and students who had history of ever seeing patients treated by an interventional radiologist (p=0.034) were more knowledgeable about IR compared to their counterparts. According to students, the most preferred method to gain more exposure to interventional radiology was lectures from interventional radiologists, followed by a radiology module.

Conclusion: Most clinical year students in Western Saudi Arabian universities expressed good to excellent knowledge about IR. However, it is recommended that knowledge of IR be reinforced and the level of interest among medical students improved through lectures from interventional radiologists and training modules.

Keywords: interventional radiology, Radiology modules, Knowledge, Medical students
Strain rate dependency of dislocation plasticity
Creators: name: Fan, Haidong
name: El-Awady, Jaafar A.
name: Wang, Qingyuan
name: Raabe, Dierk
name: Zaiser, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dislocation slip is a general deformation mode and governs the strength of metals. Via discrete dislocation dynamics and molecular dynamics simulations, we investigate the strain rate and dislocation density dependence of the strength of bulk copper single crystals using 192 simulations spanning over 10 orders of magnitude in strain rate and 9 orders of magnitude in dislocation density. Based on these large set of simulations and theoretical analysis, a new analytical relationship between material strength, dislocation density, strain rate and dislocation mobility is proposed, which is in excellent agreement with the current simulations as well as with experimental data. The results show that the material strength is a non-monotonic function of dislocation density and displays two universal regimes (first decreasing, then increasing) as the dislocation density increases. The first regime is a result of strain rate hardening, while the second regime is dominated by the classical Taylor forest hardening. Accordingly, the strength displays universally, as a function of strain rate, a rate-independent regime at low strain rates (governed by forest hardening) followed by a rate hardening regime at high strain rates (governed by strain rate hardening). All the results can be captured by a single scaling function. Finally, the fluctuations of dislocation flow are analyzed in terms of the strain rate dependent distribution of dislocation segment velocities. It is found that the fluctuations are governed by another universal scaling function and diverge in the rate independent limit, indicating a critical behavior. The current analysis provides a comprehensive understanding on how collective dislocation motions are governed by the competition between the internal elastic interactions of dislocations, and the stress required to drive dislocation fluxes at a given externally imposed strain rate.
description: 31 pages, 6 figures, 71 conferences
Green functions of the Dirac equation with magnetic-solenoid field
Creators: name: Gavrilov, S. P.
name: Gitman, D. M.
name: Smirnov, A. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Various Green functions of the Dirac equation with a magnetic-solenoid field (the superposition of the Aharonov-Bohm field and a collinear uniform magnetic field) are constructed and studied. The problem is considered in 2+1 and 3+1 dimensions for the natural extension of the Dirac operator (the extension obtained from the solenoid regularization). Representations of the Green functions as proper time integrals are derived. The nonrelativistic limit is considered. For the sake of completeness the Green functions of the Klein-Gordon particles are constructed as well.
description: 12 pages, LaTex file; added references and some comments; accepted to J.Math.Phys
title: Therapist intervention factors that influence therapeutic alliance events in family therapy with multi-problem families : a qualitative study
Creators: name: van Roosmalen, Marc J.
Publisher: name: The Open University
Year: 2001

description: Background and Aims. The study investigates the therapist factors that influence the therapeutic alliance in family therapy with multi-problem families, from the perspectives of the child and family and structured commentary of the therapist. Due to the lack of research done with this client group and the adapted use of qualitative approaches applied, the methodology is also subject to scrutiny. Design and Participants. A qualitative small-case design is used, to enable the collation of rich and detailed data of the meanings and experiences of the participants to emerge. Four family therapy cases at a child clinic are followed, using therapeutic alliance events as the units of investigation. Measures. Interpersonal Process Recall, an interview method developed by Elliott (1984), gains the views of the participants, with Interpretative Phenomenological Analysis as the method of transcript analysis. The dual role of researcher and therapist is studied reflexively on various levels. An adapted Family Therapy Alliance Scale is also administered. Results. A number of prominent themes emerged, namely, child therapy stance and technique, the children's communication style and a shift from an individual to systemic meaning of the difficulties. Others were being heard and listened to versus the experience of not being heard, working alongside the family, benefits and motivation in therapy and the experience of safety. Implications. The study gives a useful account of the participants' views of which therapist intervention factors influenced the alliance and links with current research and theory. Prominent implications were the full participation of children, shifts in the meanings families ascribe to their difficulties and ways for therapists to collaborate with them. Evidence of the viability and limitations of the method used is provided. Directions of further research are suggested.
Rutile occurrence and trace element behavior in medium-grade metasedimentary rocks: example from the Erzgebirge, Germany
Creators: name: Luvizotto, George Luiz
name: Zack, Thomas
name: Triebold, Silke
name: Von Eynatten, Hilmar
Publisher: name: FID GEO
Year: 2009

description: Metamorphic textures in medium-grade (~500– 550°C) metasedimentary rocks from the Erzgebirge give evidence of prograde rutile crystallization from ilmenite. Newly-crystallized grains occur as rutile-rich polycrystalline aggregates that pseudomorph the shape of the ilmenites. In-situ trace element data (EMP and SIMS) show that rutiles from the higher-grade samples record large scatter in Nb content and have Nb/Ti ratios higher than coexisting ilmenite. This behavior can be predicted using prograde rutile crystallization from ilmenite and indicates that rutiles are reequilibrating their chemistry with remaining ilmenites. On the contrary, rutiles from the lowest grade samples (~480°C) have Nb/Ti ratios that are similar to the ones in ilmenite. Hence, rutiles from these samples did not equilibrate their chemistry with remaining ilmenites. Our data suggest that temperature may be one of the main factors determining whether or not the elements are able to diffuse between the phases and, therefore, reequilibrate. Newly-crystallized rutiles yield temperatures (from ~500 to 630°C, Zr-in-rutile thermometry) that are in agreement with the metamorphic conditions previously determined for the studied rocks. In quartzites from the medium-grade domain (~530°C), inherited detrital rutile grains are detected. They are identified by their distinct chemical composition (high Zr and Nb contents) and textures (single grains surrounded by fine grained ilmenites). Preliminary calculation, based on grain size distribution of rutile in medium-grade metapelites and quartzites that occur in the studied area, show that rutiles derived from quartzites can be anticipated to dominate the detrital rutile population, even if quartzites are a minor component of the exposure.
THE KALEIDOSCOPE MODEL OF POLICY CHANGE: APPLICATIONS TO FOOD SECURITY POLICY IN ZAMBIA
Creators: name: Resnick, Danielle
name: Haggblade, Steven
name: Babu, Suresh
name: Hendriks, Sheryl L.
name: Mather, David
name: Resnick, Danielle
name: Haggblade, Steven
name: Babu, Suresh
name: Hendriks, Sheryl L.
name: Mather, David
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: International Development
subject: Agricultural input subsidies
subject: Kaleidoscope Model
subject: micronutrients
subject: policy process
subject: political economy
subject: Zambia

description: What explains the persistence of socially sub-optimal policies over long periods of time? What factors and forces provoke episodes of policy reform that punctuate long periods of policy inertia? These key questions increasingly concern the international donor and research communities, given the growing need to achieve policy impact with scarce resources. To address these questions, this paper introduces the Kaleidoscope Model of policy change. Inductively derived from both empirical examples in developing countries and theoretical scholarship on the political economy of reform, the model encompasses a set of 16 operational hypotheses to identify the conditions under which policies emerge on the agenda and ultimately are implemented. The paper tests the model empirically in Zambia by evaluating eight policy reform episodes related to agricultural input subsidies and vitamin A fortification. Empirical application and hypothesis testing relies on rigorous process tracing of policy chronologies through secondary sources and semi-structured interviews with a purposive sample of 58 stakeholders in Zambia. By examining two very distinct policy domains within the same country, we are able to identify which hypotheses prove most robust and which are more policy-specific. In an era of growing pressure on donor resources and government budgets, the Kaleidoscope Model offers a promising framework through which practitioners and researchers can assess when and where investments in policy reforms are most feasible given a country’s underlying political, economic, and institutional characteristics.
Pacman (II): Application and Statistical Characterisation of Improved RM Maps
Creators: name: Vogt, C.
name: Dolag, K.
name: Ensslin, T. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We proposed a new method -- "Pacman" -- to calculate Faraday rotation measure (RM) maps from multi-frequency polarisation angle data (Dolag et al.) in order to avoid the so-called n-pi ambiguity. Here, we apply our "Pacman" algorithm to two polarisation data sets of extended radio sources in the Abell 2255 and the Hydra A cluster, and compare the RM maps obtained using "Pacman" to RM maps obtained employing already existing methods. Thereby, we provide a new high quality RM map of the Hydra north lobe which is in a good agreement with the existing one but find significant differences in the case of the south lobe of Hydra A. We demonstrate the reliability and the robustness of "Pacman". In order to study the influence of map making artefacts, which are imprinted by wrong solutions to the n-pi ambiguities, and of the error treatment of the data, we calculated and compared magnetic field power spectra from various RM maps. The power spectra were derived using the method recently proposed by Ensslin & Vogt (2003). We demonstrate the sensitivity of statistical analysis to artefacts and noise in the RM maps and thus, we demonstrate the importance of an unambiguous determination of RM maps and an understanding of the nature of the noise in the data. We introduce and perform statistical tests to estimate the quality of the derived RM maps, which demonstrate the quality improvements due to "Pacman".
description: revised version, accepted, MNRAS in press
WP4T3 Final report Proficiency test SSCT for detection of E. multilocularis in red foxes
Creators: name: UMHANG, Gérald
Publisher: name: Zenodo
Year: 2022
Subjects: MEME, Echinococcus multilocularis, SSCT, proficiency test

description: A proficiency test (PT) dedicated to intestinal diagnosis of Echinococcus multilocularis in foxes was organized by the Anses rabies and wildlife laboratory. The objective was to assess the technical performance of laboratories based on the Segmental Sedimentation and Counting Technique (SSCT, Umhang et al. 2011). This work was undertaken in the frame of task 3 from work package 4 of the One Health European Join Project (OHEJP) MEME (https://onehealthejp.eu/jrp-meme/).
 The aim of the PT is to evaluate for the first time the ability of participants to realize intestinal diagnosis of E. multilocularis in foxes from intestines samples by removing the worms from the intestinal mucosa and realize morphological identification.
description: {"references": ["Umhang et al. 2011. Segmental sedimentation and counting technique (SSCT): an adaptable method for qualitative diagnosis of Echinococcus multilocularis in fox intestines. Exp. Parasitol. 128, 57\u201360."]}
The Average Physical Properties of A-G Stars Derived from uvby-H$β$ Strömgren-Crawford Photometry as the Basis for a Spectral-Classification Synthetical Approach
Creators: name: Mese, G. Dalle
name: López-Cruz, O.
name: Schuster, W. J.
name: Chavarría-K, C.
name: Ibarra-Medel, H. J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have revisited and updated the $uvby$ Strömgren colour and colour-index distributions of A, F and early G-type main sequence stars. For this aim, we selected 7054 dwarf stars along with 65 MK standard stars within the same spectral range but covering all luminosity classes. The standard stars were selected following the MK mandate strictly, using spectra taken at classification resolution recorded on photographic plates. We used the colours of these stars to determine the effective temperature and surface gravity. After correcting for systematic offsets using fundamental parameters and considering a few exceptions, we find an one-to-one correspondence, among MK spectral types, Strömgren photometry, and their associated physical properties. We have applied a principal component analysis to the mean Strömgren indices for dwarf stars complemented by MK standards for higher luminosity classes. We have used the projections to introduce three new photometric metaindices, namely SM1, SM2, and SM3. We have defined a 3D-box, which allowed us to segregate dwarf stars from bright giants and supergiant stars, with the aid of the metaindices. Two of the planes show that the projections of dwarfs and supergiants are ordered by temperature; however, the temperature dependence for the supergiants is not as well defined as for the dwarfs. Following the MK Process, we were able to form an automatic classifier. We present some applications and assigned synthetical spectral types. We suggest that our metaindices formalism allows the extension of Strömgren photometric outside its original mandate (i.e., later types), without requiring the introduction of additional photometric filters.
description: 20 pages, 22 figures, 9 tables, accepted for publication in MNRAS
THE EFFECTS OF KENYA’S ‘SMARTER’ INPUT SUBSIDY PROGRAM ON SMALLHOLDER BEHAVIOR AND INCOMES: DO DIFFERENT QUASI-EXPERIMENTAL APPROACHES LEAD TO THE SAME CONCLUSIONS?
Creators: name: Mason, Nicole M.
name: Wineman, Ayala
name: Kirimi, Lilian
name: Mather, David
name: Mason, Nicole M.
name: Wineman, Ayala
name: Kirimi, Lilian
name: Mather, David
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: International Development
subject: input subsidy programs
subject: fertilizer
subject: hybrid seed
subject: poverty
subject: welfare
subject: smallholder farmers
subject: Kenya
subject: sub-Saharan Africa

description: Kenya joined the ranks of sub-Saharan African (SSA) countries implementing targeted input subsidy programs (ISPs) for inorganic fertilizer and improved seed in 2007 with the establishment of the National Accelerated Agricultural Inputs Access Program (NAAIAP). While several features of NAAIAP were ‘smarter’ than other ISPs in the region, some aspects were less ‘smart’. However, the efficacy of this program, and the relationship between its design and effectiveness, have been little studied. This article uses nationwide survey data to estimate the effects of NAAIAP participation on Kenyan smallholders’ cropping patterns, incomes, and poverty status. Unlike most previous studies of ISPs, a range of panel data- and propensity score-based methods are used to estimate the effects of NAAIAP. The article then compares these estimated effects across estimators and to the effects of other ISPs in SSA, and discusses the likely links between differences in program designs and impacts. The results are robust to the choice of estimator and suggest that, despite substantial crowding out of commercial fertilizer demand, NAAIAP had sizable impacts on maize production and poverty severity. NAAIAP’s success in targeting resource-poor farmers and implementation through vouchers redeemable at private agro-dealer shops likely contributed to its more favorable impacts than those of ISPs in Malawi and Zambia.
AN ECONOMIC COMPARISON OF MIDWEST AND NORTH CAROLINA HOG PRICES
Creators: name: Ikerd, John
name: Ikerd, John
Publisher: name: Unknown
Year: 1971
Subjects: Agribusiness
Demand and Price Analysis
Livestock Production/Industries

description: During the decade of the 60's, hog production in North Carolina increased by more than 50 percent. During the early 60's, North Carolina pork consumption was as much as 100 million pouuds greater than production. By the end of the decade, pork production in the state exceeded consumption. Theoretical price relationships between North Carolina and the Midwest were examined giving specific attention to North Carolina's change from importing to exporting pork to other states. North Carolina hog prices were compared to prices at various midwestern markets using prices reported during the 60's. Specific attention was given to differences in methods of marketing and price reporting and to differences in quality of hogs. The observed price differences were consistent with theoretical differences. North Carolina prices were found to be higher than Midwest prices by an amount roughly equal to transfer cost from the Midwest to North Carolina during the early 60's. As production in North Carolina increased, North Carolina hog prices declined relative to Midwest prices. In the late 60's, North Carolina prices were about the same as prices in the Midwest. No further relative decline would be expected.
Os, Sr, Nd, Pb, O isotope and trace element data from the Ferrar flood basalts, antarctica: evidence for an enriched subcontinental lithospheric source
Creators: name: Molzahn, M.
name: Reisberg, L.
name: Wörner, G.
Publisher: name: FID GEO
Year: 1996

description: Os, Sr, Nd, Pb and O isotopes and trace element data are reported for basaltic andesite and andesite whole rocks and, in part, for selected mineral separates from the Jurassic Ferrar flood basalt province. Radiogenic Sr (> 0.709), unradiogenic Nd (εNd= −3 to −5), and radiogenic Pb isotopes, as well as low Nb/La ratios of 0.4 – 0.6 and Nb/La ratios between 0.45 and 0.6 are found for all rocks including our most primitive sample (Mg# = 71.9). This indicates involvement of either continental crust or enriched lithospheric mantle in magma genesis. 187Re/188Os correlates strongly with 187Os/188Os, with an age of 172 ± 5 Ma, in agreement with published Arsingle bondAr data. Initial 187Os/188Os of 0.194 ± 0.023 is close to the range of typical mantle values for MORB, OIB and lithospheric mantle and much lower than that of continental crust. δ18O values between 5‰ and 7‰ were obtained on fresh bulk samples, separated plagioclases and clinopyroxenes. Srsingle bondO and Srsingle bondOs isotope mixing calculations between depleted mantle peridotite or mantle melts and crustal material rule out assimilation involving basalts with low Os concentrations, and simple binary mixing or pure AFC processes involving picrites. AFC processes, combined with continuous replenishment of picritic magmas, can explain the isotopic data, provided the crustal end-member has high 87Sr/86Sr and low δ18O values. However, lower crustal samples displaying these characteristics are absent in the Ferrar region, and are also unlikely to impart the sediment-like trace element patterns observed in the Ferrar data. A more likely explanation is a lithospheric source enriched by subducted sediments. A contribution to Ferrar magmatism from a plume cannot be distinguished.
ORGANIZATION OF TOBACCO FARMS UNDER ACREAGE AND ACREAGE-POUNDAGE CONTROL PROGRAMS, CENSUS SUBREGION 17, NORTH CAROLINA
Creators: name: Davis, Bob
name: Ihnen, Loren A.
name: Davis, Bob
name: Ihnen, Loren A.
Publisher: name: Unknown
Year: 1971
Subjects: Agricultural and Food Policy
Crop Production/Industries
Farm Management

description: The objective of this report was to describe changes in the structure and organization of flue-cured tobacco farms which occurred following replacement of the acreage control program with an acreagepoundage program. Farmer survey data from Census Subregion 17 for 1964 and 1967 were analyzed. An average farm, constructed from the data, was used to compare the organization of farms under the two control programs. In addition, five farm sizes were delineated based on acreage of cropland in 1964 and 1967 so that changes in farm organization for farms with different resource situations could be estimated. Only minor changes in tobacco practices occurred following the change in Government programs from acreage to acreage-poundage controls. Tobacco varieties were changed, plant population per acre and fertilization levels were reduced slightly, but use of most technical innovations such as new chemicals remained constant.
Mazocraeoides bychowskyi Caballero & Bravo-Hollis 1959
Creators: name: Mendoza-Garfias, Berenit
name: García-Prieto, Luis
name: León, Gerardo Pérez-Ponce De
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Monogenea
Mazocraeidea
Mazocraeidae
Mazocraeoides
Mazocraeoides bychowskyi

description: Mexicana bychowskyi Caballero & Bravo-Hollis, 1959
 Mexicana bychowskyi Caballero & Bravo-Hollis, 1959: 167.
HOSTS. — Actinopterygii (gills).
 GEOGRAPHIC DISTRIBUTION. — Guerrero. Zihuatanejo: Haemulon maculicauda (Gómez del Prado 1977)**.
 Jalisco. Bahía de Banderas: “Truchita de la familia Sciaenidae ” (Caballero & Bravo-Hollis 1959); Bahía de Chamela: Microlepidotus brevipinnis (Aranda-Cruz 2006).
 SPECIMENS IN COLLECTIONS. — CNHE (89-90, 3221).
NOTE
 Kohn et al. (2006) included this species in Tetraonchidae.
description: Published as part of Mendoza-Garfias, Berenit, García-Prieto, Luis & León, Gerardo Pérez-Ponce De, 2017, Checklist of the Monogenea (Platyhelminthes) parasitic in Mexican aquatic vertebrates, pp. 501-598 in Zoosystema 39 (4) on page 522, DOI: 10.5252/z2017n4a5, http://zenodo.org/record/4578694
Die Perspektive der Regelschule auf die integrierte Sonderschulung
Creators: name: Fitze, Monika
Publisher: name: Zenodo
Year: 2017
Subjects: Sonderpädagogik
Regelschule
Sonderschule
Masterarbeit

description: Die aktuelle Sicht auf die Umsetzung der Integration weist der Lehrperson eine Schlüsselrolle zu. Die Arbeit geht der Frage nach, wie Regelschullehrpersonen die integrative Schulung von Kindern mit einer geistigen Behinderung beurteilen. Es wurden sieben Leitfaden-Interviews durchgeführt (4 Primarstufe ,3 Sekundarstufe) und nach der wörtlichen Transkription mittels qualitativer Inhaltsanalyse ausgewertet. Die Mehrheit der Befragten fühlt sich den Aufgaben der Integration trotz hoher Belastung, gewachsen. Die Verantwortung für das Gelingen der Integration sehen vier von sieben Lehrpersonen bei der Schulischen Heilpädagogin (SHP). Alle Lehrpersonen stellen bei sich selbst und bei den integrierten Kindern einen Lernzuwachs fest. Die Akzeptanz durch die Regelschüler wird mehrheitlich positiv eingeschätzt. Die Begleitung der Regelschüler in der Auseinandersetzung mit der Behinderung wird als herausfordernde Aufgabe von mehreren Lehrpersonen genannt.