cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The impact of white noise on a supercritical bifurcation in the Swift-Hohenberg equation
Creators: name: Bianchi, Luigi Amedeo
name: Blömker, Dirk
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 60H15, 35B32, 35K55

description: We consider the impact of additive Gaussian white noise on a supercritical pitchfork bifurcation in an unbounded domain. As an example we focus on the stochastic Swift-Hohenberg equation with polynomial nonlinearity. Here we identify the order where small noise first impacts the bifurcation. Using an approximation via modulation equations, we provide a tool to analyse how the noise influences the dynamics close to a change of stability.
description: To appear on Physica D: Nonlinear Phenomena
Quantum master equation approach to quantum transport through mesoscopic systems
Creators: name: Li, Xin-Qi
name: Luo, Jun-Yan
name: Yang, Yong-Gang
name: Cui, Ping
name: Yan, YiJing
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: For quantum transport through mesoscopic system, a quantum master equation approach is developed in terms of compact expressions for the transport current and the reduced density matrix of the system. The present work is an extension of Gurvitz's approach for quantum transport and quantum measurement, namely, to finite temperature and arbitrary bias voltage. Our derivation starts from a second-order cummulant expansion of the tunneling Hamiltonian, then follows conditional average over the electrode reservoir states. As a consequence, in the usual weak tunneling regime, the established formalism is applicable for a wide range of transport problems. The validity of the formalism and its convenience in application are well illustrated by a number of examples.
description: 8 pages, 1 figure; with considerable extension of the previous version submitted in September 2004; to appear in Phys. Rev. B
Phytochemical and Taxonomical Studies of Lepidium sativum L. (Brassicaceae)
Creators: name: Sangekar S N
name: Devarkar V D
name: Shaikh Tarbej
name: Shahane M K
name: Kshirsagar U M
Publisher: name: figshare
Year: 2020
Subjects: Botany

description: Almost 75 – 80 % of developing countries rely on traditional medicines, mostly on chemical constituents and drugs which is obtain from plant, for their primary health care needs, according to World Health Organisation (WHO). In recent times, focus on plant research has increased all over the world and a large number of evidence has collected to show immense potential of medicinal plants used in various traditional systems.Similarly it has been already proved that the correct identification and authentication of taxa is most important in plants science. The Lepidium sativum L. has enormous traditional uses against various diseases. The present review aims to Phytochemical, Morphological and anatomical review of Lepidium sativum L. In the present work phytochemistry and taxonomical enumeration of Lepidium sativum L. is carried out.
Entanglement entropy scaling transition under competing monitoring protocols
Creators: name: Van Regemortel, Mathias
name: Cian, Ze-Pei
name: Seif, Alireza
name: Dehghani, Hossein
name: Hafezi, Mohammad
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Dissipation generally leads to the decoherence of a quantum state. In contrast, numerous recent proposals have illustrated that dissipation can also be tailored to stabilize many-body entangled quantum states. While the focus of these works has been primarily on engineering the non-equilibrium steady state, we investigate the build-up of entanglement in the quantum trajectories. Specifically, we analyze the competition between two different dissipation channels arising from two incompatible continuous monitoring protocols. The first protocol locks the phase of neighboring sites upon registering a quantum jump, thereby generating a long-range entanglement through the system, while the second destroys the coherence via a dephasing mechanism. By studying the unraveling of stochastic quantum trajectories associated with the continuous monitoring protocols, we present a transition for the scaling of the averaged trajectory entanglement entropies, from critical scaling to area-law behavior. Our work provides an alternative perspective on the measurement-induced phase transition: the measurement can be viewed as monitoring and registering quantum jumps, offering an intriguing extension of these phase transitions through the long-established realm of quantum optics.
Practical Inversion of 3D time domain electromagnetic data
Creators: name: Napier, Scott
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this thesis is to provide a simple procedure by which time domain electromagnetic (TEM) data, which has been collected in the field, can be inverted to recover a three dimensional distribution of electrical conductivity. An algorithm, EH3DTDinv, which has been developed in order to invert TEM data in 3D is briefly presented. The algorithm has been previously shown to work well on synthetic data. However, its ability to invert real data collected in field surveys was previously unclear. To illustrate the effectiveness of the inversion algorithm when used in conjunction with an inversion procedure, the example of the UTEM survey at the San Nicolas deposit in Zacatecas Mexico is used. The inversion procedure provides a detailed description of the preparations required for 3D TEM inversion. In order to clarify the individual stages in the procedure, the inversion preparations are outlined as they apply to the San Nicolas survey. Problems of non-uniqueness in the inverted models at San Nicolas are encountered and the solution is determined to be a combination of a sensitivity weighting scheme and the use of the data from multiple transmitters simultaneously in a single inversion. The iterative nature of the inversion procedure is demonstrated through the San Nicolas example. The San Nicolas inversion example culminates in the simultaneous inversion of data from 3 transmitters where a priori information from the regional geology has been incorporated into the result. The 3D inversion result is the first large scale 3D TEM inversion for a mineral deposit and agrees well with the geology and conductivities interpreted from drilling. Practical aspects of inversion are also considered and some recommendations on data formats, software utilities, and survey design are made in order to enhance future results. A brief study into inversion efficiency determined that a significant reduction in computation times can be achieved without loss of accuracy or resolution by fine tuning the cooling schedule of the algorithm. Further reductions in computation times are made through parallelization of the forward modelling process. Finally, yet more reductions in computation times are possible through the coarsening of the spatial and temporal discretizations. However, this final method of computational reduction is shown to come at the cost of accuracy and resolution in the inverted model. The thesis concludes with a discussion of the potential for 3D TEM inversion and brief outline of future advancements in the field.
EVALUACION PRELIMINAR DE CULTIVARES HIBRIDOS Y NATURALES DEL GENERO MUSA EN LA REPUBLICA DOMINICANA
Creators: name: Galvan, E.
name: Morales, G.
name: Perez, R.
name: Galvan, E.
name: Morales, G.
name: Perez, R.
Publisher: name: Unknown
Year: 1997
Subjects: Agricultural and Food Policy

description: El plâtano y el banano son dos productos importantes en la dieta de la poblaciôn dominicana. Conjuntamente con la yuca, la papa, el name y la yautia, estas musâceas completan la denominada canasta de "viveres", siendo los de mayor preferencia en la composiciôn de la canasta alimenticia. La produccion de musâceas, en especial el plâtano, estâ sometida al peligro que representa la introduction de plagas y enfermedades de importancia cuarentenaria, como es el caso de la Sigatoka negra (Mycosphaerella Fijiensis Morelet). Desde el ano 1991, la FDA ha venido apoyando diferentes actividades en las musâceas y ha impulsado la ejecuciôn de un programa nacional de investigation en musâceas. Estas actividades abarcan cursos, reuniones, misiones técnicas, asistencia técnica y apoyo a proyectos de investigation. De estas actividades se han beneficiado técnicos y productores. En 1994 se initio un proyecto para evaluar la adaptation y rendimiento de clones naturales e hibridos de Musa, con el objetivo de seleccionar materiales con tolerancia a enfermedades foliares, en especial en prevention a la apariciôn de la Sigatoka negra. Las evaluaciones de rendimiento en primera cosecha muestran que entre Ios clones de plâtano, el clon FHIA 21 alcanzô un peso promedio de racimo de 23.81 kg superando Ios clones locales M χ H Morado, M χ H Verde y M Barâhonero. Entre los clones de banano, FHIA-01 y FHIA-02 alcanzaron pesos de racimos de 24.68 y 24.77 kg, respectivamente, superiores al Cavendish V* con 20.9 kg, pero con sabor de fruta de menor aceptaciôn. Dentro del tipo "Rulo" o Bluggoe, FHIA-03 alcanzô el mâs alto peso de racimo con 34.85 kg, pero también présenta problemas de aceptaciôn por el sabor del fruto.
Hoplitis (Formicapis) robusta
Creators: name: Ebmer, A. W.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Hoplitis
Hoplitis robusta

description: Hoplitis (Formicapis) robusta (NYLANDER 1848)
Abb. 15, ♀ und Abb. 14, 3.
 TKALCŮ (1995: 121) legt den Lectotypus fest. Der Name robusta in Verbindung mit Hoplitis oder Osmia lässt eine grosse Art vermuten, was mit der Beschreibung nicht übereinstimmt. Es darf nicht übersehen werden, dass die Art ursprünglich unter dem Binomen Heriades robusta beschrieben wurde und im Vergleich mit den anderen Heriades -Arten in Europa ist diese Art als "robust", also kräftig im Körperbau zu bezeichnen.
 In Europa streng boreo-alpin verbreitet. In Finnland nördlich bis zu den Regionen Ostrobottnia borealis und Karelia borealis ca N63 ° verbreitet und nach den Angaben von ELFVING (1968: 42) nicht selten. Nach Süden im Baltikum bis Lettland ohne nähere Ortsangaben. In den Alpen nur vom Wallis bis Kärnten: In der Schweiz wenige Funde vom Wallis, rezent schwerpunktmässig in Graubünden (AMIET et al. 2004: 173), und von da nach Osten anschliessend in Südtirol: Stilfserjochstrasse 1700-1800m, oberhalb Algund 1900m (EBMER 1997: 58), Kollern bei Bozen [heute Kohlern/Colle, südlich Bozen, ca 1000m] (STÖCKL 2000: 296) und Seiser Alm. In den Alpen Österreichs ebenfalls eine grosse Seltenheit. Nur wenige Exemplare bekannt aus den Bundesländern Tirol (Venn- Spitze im Wipptal, Trins), Salzburg (Gastein, locus typicus des Synonyms O. rhinoceros), Kärnten (Nationalpark Hohe Tauern im Mölltal die bisher meisten Funde in Österreich; Koralpe E Steinberger Hütte) und Steiermark (Admonter Kalbling im Gesäuse, ein historischer, von mir überprüfter Fund) (EBMER 1997: 58; 2003: 367).
In Asien nur ein genauer Fund aus der NW-Mongolei (Ulaangom) bei TKALCŮ (1995) publiziert. Pauschale Daten bei PROSHCHALYKIN (2007a: 4) von der Region Irkutsk nach Osten bis zur Amurregion und nördlich bis Magadan und Chukotka.
In der Nearktis von Alaska, Northwest Territories, Alberta, Saskatchewan und im Osten Quebec, weiter südlich nur in der Westnearktis entlang der Gebirge von Montana, Wyoming, Colorado, Oregon bis California.
Erkennen der Art als holarktisch: PETERS 1970.
 Hoplitis robusta ist eine taxonomisch sehr isolierte Art, und zur selben Untergattung gibt es nur eine weitere Art, Hoplitis maritima (ROMANKOVA 1985) von der Primorskij- Region, als Isolat zu verstehen, das die Artschranke längst überschritten hat. PETERS bewertet H. robusta als sibirisches Faunenelement und verweist auf die Verbindung beider Regionen über die trocken gefallene Beringstrasse. Aus der Kenntnis der heutigen Verbreitung ist es möglich und ich halte es ein wenig wahrscheinlicher, dass H. robusta, die eine nach der Morphologie evolutiv sehr alte Art repräsentiert, eher paläarktischen Ursprungs ist, aber schon sehr früh in die Nearktis einwanderte.
description: Published as part of Ebmer, A. W., 2011, Holarktische Bienenarten - autochthon, eingeführt, eingeschleppt, pp. 5-83 in Linzer biologische Beiträge 43 (1) on pages 36-37, DOI: 10.5281/zenodo.4524335
Local kinematics of K and M giants from Coravel/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters
Creators: name: Famaey, B.
name: Jorissen, A.
name: Luri, X.
name: Mayor, M.
name: Udry, S.
name: Dejonghe, H.
name: Turon, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The availability of the Hipparcos Catalogue triggered many kinematic and dynamical studies of the solar neighbourhood. Nevertheless, those studies generally lacked the third component of the space velocities, i.e., the radial velocities. This work presents the kinematic analysis of 5952 K and 739 M giants in the solar neighbourhood which includes for the first time radial velocity data from a large survey performed with the CORAVEL spectrovelocimeter. It also uses proper motions from the Tycho-2 catalogue, which are expected to be more accurate than the Hipparcos ones. The UV-plane constructed from these data for the stars with precise parallaxes reveals a rich small-scale structure, with several clumps corresponding to the Hercules stream, the Sirius moving group, and the Hyades and Pleiades superclusters. A maximum-likelihood method, based on a bayesian approach, has been applied to the data, in order to make full use of all the available stars and to derive the kinematic properties of these subgroups. Isochrones in the Hertzsprung-Russell diagram reveal a very wide range of ages for stars belonging to these groups. These groups are most probably related to the dynamical perturbation by transient spiral waves rather than to cluster remnants. A possible explanation for the presence of young clusters in the same area of the UV-plane is that they have been put there by the spiral wave associated with their formation, while the kinematics of the older stars of our sample has also been disturbed by the same wave. The term "dynamical stream" for the kinematic groups is thus more appropriate than the traditional term "supercluster" since it involves stars of different ages, not born at the same place nor at the same time.
description: 22 pages, 16 figures, accepted for publication in A&A
Light-nuclei production and search for the QCD critical point
Creators: name: Shuryak, Edward
name: Torres-Rincon, Juan M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We discuss the potential of light-nuclei measurement in heavy-ion collisions at intermediate energies for the search of the hypothetical QCD critical end-point. A previous proposal based on neutron density fluctuations has brought appealing experimental evidences of a maximum in a ratio involving tritons, protons and deuterons, ${\cal O}_{tpd}$. However these results are difficult to reconcile with the state-of-the-art statistical thermal model predictions. Based on the idea that the QCD critical point can lead to a substantial attraction among nucleons, we propose new ratios involving $^4$He in which the maximum would be more evident. We argue that the experimental extraction is feasible by presenting actual measurements at low and high collision energies. We also illustrate the possible behavior of these ratios at intermediate energies applying the semiclassical method based on flucton paths using preliminary STAR data for ${\cal O}_{tpd}$.
description: 7 pages, 3 figures. Typos fixed, explanations extended, figures improved, and new references added. Version published in Eur.Phys.J.A
title: Continuous Spectra For Substitution-Based Sequences
Creators: name: Chan, Lax
Publisher: name: The Open University
Year: 2018

description: This thesis is chiefly concerned with the continuous spectra of substitution-based sequences. First, motivated by a question of Lafrance, Yee and Rampersad [34], we establish a connection between the ‘root-N’ property and the corresponding sequences that satisfy it having absolutely continuous spectrum. Then we use the recent advances in Bartlett [10, 11] to show that the Rudin–Shapiro-like sequence has singular continuous spectrum, hence does not satisfy the root-N property. This gives a negative answer to the question raised by the authors in [34]. Secondly, we use the connection we establish between the root-N property and absolute continuity to create more substitution-based sequences that have absolutely continuous/Lebesgue spectrum. This is done by modifying Rudin’s original construction [44]. We show that the binary sequences (±1 sequences) from our modification also satisfy the root-N property and they are mutually locally derivable to the corresponding substitution sequences. This shows that the spectral properties of the substitution-based sequences are inherited from their binary counterpart. Finally, we generalise our construction using Fourier matrices. This leads to extending Rudin’s construction to sequences with complex coefficients. This approach allows us to generate substitution sequences of any constant length greater than or equal to two. We show explicitly in the length 3 and 4 cases that these systems exhibit Lebesgue spectrum, employing Bartlett’s algorithm from Chapter 3 and mutual local derivability.
THE EFFECTS ON FRESHWATER SHRIMP SURVIVAL DURING WATERLESS SHIPMENT USING A Z ITE PACKAGING ENVIRONMENT
Creators: name: Seijo, R. Perez
name: Harper, C. L.
name: Kubaryk, J. M.
name: Seijo, R. Perez
name: Harper, C. L.
name: Kubaryk, J. M.
Publisher: name: Unknown
Year: 1997
Subjects: International Relations/Trade
Livestock Production/Industries

description: Live shipment of aquatic animals has increased over the last ten years, sparking both more interest (providing a larger market through product diversification) and a broader geographical market. To be commercially competitive in the world market, it is becoming increasingly more important to be able to deliver a live product. Increasing the survival time during transfer without increasing shipping costs by sending the animals in a dry environment, would enlarge the geographic radius of shipment, making it possible for aquaculture producers to be more competitive in exporting their products worldwide. Methods had already been developed to ship freshwater shrimp (Macrobrachium rosenbergii) live for 17 hours (pretreated for five minutes at 10° C and stored at 17° C and 50% relative humidity). It was also known that metabolic changes occur several hours before death in kurama prawns. What was not known was whether methods of removing toxic metabolic by-products from the shipping environment would increase these survival times even further. Zeolites are commonly used in animal production systems to reduce the content of ammonia and other forms of nitrogen by-productrs in the growth medium. The survival rates of shrimp with and without zeolite inside the shipping containers are reported. Recommendations of conditions for the highest survival rate are made. To better understand the efficacy of the zeolite treatment reported here complete nitrogen budgets for treated and untreated shrimps are going to be conducted.
SUBPRODUCTOS DE LA DEST1LACI0N DEL RON COMO FUENTE POTENCIAL DE PROTEÎNA PARA LA NUTRICIÔN DE PECES
Creators: name: Sanjaan-Marmolejo, A.
name: Kubaryk, J. M.
name: Sanjaan-Marmolejo, A.
name: Kubaryk, J. M.
Publisher: name: Unknown
Year: 1997
Subjects: Agricultural and Food Policy

description: El desarrollo econômico y demogrâfico a nivel mundial ha originado seriös problemas de contamination, resultado de un aumento en las descargas de desechos hacia el ambiente, destruyendo Ios ecosistemas costeros, principal fuente de alimento proteico. Una alternativa para la utilization de estos desechos podria ser a través de su utilization biolôgica en acuicultura. Subproductos de la destilaciôn del ron Bacardi (BDS) se evaluaron como una fuente de proteina alterna en dietas para tilapia. Los experimentos se realizaron para determinar los efectos de la incorporation progresiva de BDS en dietas para tilapia mediante la sustituciôn de harina de soya (HS). En el primer experimento, en acuarios de vidrio, Ios peces alimentados con la dieta 100% BDS presentaron los menores indices de crecimiento y utilization de alimento; estos factores fueron significativamente mayores (P<0.05) para las dietas 0%(control) y 80% BDS. Tilapia cultivada en jaulas con la dieta 80% BDS obtuvo una mayor ganancia de peso, razôn de crecimiento diario y mejor tasa de conversion de alimento con respecto a la dieta control, aunque no se presentaron diferencias significativas (P>0.05). Tilapia criada en estanques, alimentada con la dieta 0% BDS obtuvo una ligeramente mayor (P>0.05) utilization de alimento comparada con la alimentada con la dieta 80% BDS. Se concluyô que BDS es un ingrediente potential, seguro, capaz de sustituir el 80% de harina de soya, en dietas para tilapia, sin causar efectos negativos en la utilization de alimento, crecimiento, composition corporal y calidad de agua.
Bombus (Alpinobombus) polaris CURTIS 1835
Creators: name: Ebmer, A. W.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Bombus
Bombus polaris

description: Bombus (Alpinobombus) polaris CURTIS 1835
Die Jahreszahl der Publikation folgt WILLIAMS; bei HURD wird 1834 gebraucht.
 Fennoscandien, in Finnland zwischen N67 ° bis N68 ° (hier unter dem Synonym B. alpiniformis RICHARDS 1927). Nord-Kamtschatka, Chukotka. — Arktisches Alaska, Kanada, Grönland.
description: Published as part of Ebmer, A. W., 2011, Holarktische Bienenarten - autochthon, eingeführt, eingeschleppt, pp. 5-83 in Linzer biologische Beiträge 43 (1) on page 38, DOI: 10.5281/zenodo.4524335
REEMPLAZO DE LA HARINA DE PESCADO POR HARINA DE SUBPRODUCTOS AVICOLAS EN DIETAS PARA TILAPIA ROJA
Creators: name: Revollo-Barrios, Andres
name: Kubaryk, John
name: Cortes, Ricardo
name: Revollo-Barrios, Andres
name: Kubaryk, John
name: Cortes, Ricardo
Publisher: name: Unknown
Year: 1997
Subjects: Agricultural and Food Policy

description: El reemplazo de la harina de pescado (HP) por harina de subproductos avicolas (HSPA) se avaluô en 27 acuarios de 80 litros de capacidad, durante 42 dias. Se formularon dietas iso-nitrogenadas e iso-calôricas con dos niveles de proteina (36 y 26%). Se utilizaron 14 tilapias rojas, con un peso promedio inicial de 6.7 g. Los niveles de sustituciôn fueron 0, 33, 67 y 100%. Las dietas fueron comparadas con un alimento comercial que contenia un 30% de proteina cruda y 511 Kcal ED/100 g. Las siguientes variables fueron determinados: mortalidad, lipido ganado, proteina, peso ganado, consumo y conversion aparente de alimento, energia y tasa de proteina retenida. Los niveles de proteina 36 y 26% no mostraron diferencia con respecto al promedio del porcentaje de mortalidad (7.14±3.90 y 7.74±5.81%), el lipido ganado (0.25±0.13 y 0.25±0.12 g), la energia cruda dietética (610±2.30 y 578±2.43 kcal/100 g), la energia total ingerida (608±4.12 y 577±4.40 kcal/100 g) y el porcentaje de energia retenida (19.1±2.42 y 17.7±3.12%), respectivamente. Para ambos niveles de proteina la sustituciôn del 33% no tuvo diferencia significativa con respecto al alimento ingerido (213.5±12.65 y 170.9±12.38 g), el factor de conversion aparente del alimento (1.38±0.05 y 1.42±0.17), la proteina ganada (23.47±4.630 y 19.62±3.080 g), el porcentaje de proteina depositada (30.3±4.28 y 44.6±3.64%). Los peces que consumieron las dietas de 36% de proteina tuvieron un mâs bajo promedio de razôn de eficiencia protéica (1.87±0.10) que los peces que se alimentären con las dietas de 26% de proteina (2.52±0.34). Estos datos sugieren que es posible un reemplazo del 33% de HP por la HSPA sin que cause algùn efecto adverso al factor de conversiôn del alimento.
Bombus (Pyrobombus) jonellus
Creators: name: Ebmer, A. W.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Bombus
Bombus jonellus

description: Bombus (Pyrobombus) jonellus (KIRBY 1802)
Abb. von Königin und Arbeiterin bei HAGENS 1988: 159.
 Europa einschliesslich den Britischen Inseln und Island, in Finnland zwischen N60 ° und N70 °. Selten in ganz Mitteleuropa einschliesslich der Alpen, Tatra, Karpaten; in Südeuropa nur in den Gebirgen: Kantabrisches Gebirge, Pyrenäen, Massiv Central, Balkanische Gebirge. Durch die ganze Paläarktis bis zum Pazifik, Primorskij-Region, nördlich bis Kamtschatka, Nördliche Kurilen, Magadan. — Alaska, Kanada, nördliche USA, hier bei HURD unter dem Synonym B. frigidus var. alboanalis FRANKLIN 1913 angeführt.
 Insgesamt hat B. jonellus die weiteste Verbreitung von allen Hummelarten.
description: Published as part of Ebmer, A. W., 2011, Holarktische Bienenarten - autochthon, eingeführt, eingeschleppt, pp. 5-83 in Linzer biologische Beiträge 43 (1) on page 39, DOI: 10.5281/zenodo.4524335
Correlated geminal wave function for molecules: an efficient resonating valence bond approach
Creators: name: Casula, M.
name: Attaccalite, C.
name: Sorella, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We show that a simple correlated wave function, obtained by applying a Jastrow correlation term to an Antisymmetrized Geminal Power (AGP), based upon singlet pairs between electrons, is particularly suited for describing the electronic structure of molecules, yielding a large amount of the correlation energy. The remarkable feature of this approach is that, in principle, several Resonating Valence Bonds (RVB) can be dealt simultaneously with a single determinant, at a computational cost growing with the number of electrons similarly to more conventional methods, such as Hartree-Fock (HF) or Density Functional Theory (DFT). Moreover we describe an extension of the Stochastic Reconfiguration (SR) method, that was recently introduced for the energy minimization of simple atomic wave functions. Within this extension the atomic positions can be considered as further variational parameters, that can be optimized together with the remaining ones. The method is applied to several molecules from Li_2 to benzene by obtaining total energies, bond lengths and binding energies comparable with much more demanding multi configuration schemes.
description: 20 pages, 5 figures, to be published in the Journal of Chemical Physics
Doing well with change : what helps and what hinders well-educated immigrant women workers?
Creators: name: Koert, Emily Christina
Publisher: name: University of British Columbia
Year: 2011

description: The purpose of this study was to gain an understanding of the strategies that new immigrant women employ to do well with changes that affect their work. This study asked the questions: What helps and what hinders immigrant women workers to do well with changes that affect their work? What would have been more helpful to do well with these changes? Participants were 10 well-educated immigrant women. Data was gathered using semi-structured, open-ended individual interviews consistent with Flanagan's (1954) Critical Incident Technique (CIT). Data was primarily analyzed using the CIT methodology. A total of 182 incidents that were grouped into 9 categories were extracted from the participants' interviews. The categories were: 1) Personal Beliefs/Traits/Values, 2) Relationships with friends/Family/ Colleagues, 3) Taking Action/Building Capacity, 4) Work Environment, 5)Self Care, 6) Skills/Knowledge/Credentials/Education, 7) Personal Issues/Challenges, 8) Contexual Issues/Challenges, and 9) Government/Community Resources. The results reaffirm the findings in the existing literature on immigrant women's thriving, resilience and hardiness and adaptation and transitions after immigration while providing a more personal account of these experiences. Uniquely, while many of the participants spoke of personal sacrifice in order to ensure the well being of their families, the importance of self-care was also highlighted. The factors that immigrant women find helpful and hindering in doing well with change can inform service delivery, program development and future research studies with this population.
A correspondence between strings in the Hagedorn phase and asymptotically de Sitter space
Creators: name: Brustein, Ram
name: Medved, A. J. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A correspondence between closed strings in their high-temperature Hagedorn phase and asymptotically de Sitter (dS) space is established. We identify a thermal, conformal field theory (CFT) whose partition function is, on the one hand, equal to the partition function of closed, interacting, fundamental strings in their Hagedorn phase yet is, on the other hand, also equal to the Hartle-Hawking (HH) wavefunction of an asymptotically dS Universe. The Lagrangian of the CFT is a functional of a single scalar field, the condensate of a thermal scalar, which is proportional to the entropy density of the strings. The correspondence has some aspects in common with the anti-de Sitter/CFT correspondence, as well as with some of its proposed analytic continuations to a dS/CFT correspondence, but it also has some important conceptual and technical differences. The equilibrium state of the CFT is one of maximal pressure and entropy, and it is at a temperature that is above but parametrically close to the Hagedorn temperature. The CFT is valid beyond the regime of semiclassical gravity and thus defines the initial quantum state of the dS Universe in a way that replaces and supersedes the HH wavefunction. Two-point correlation functions of the CFT scalar field are used to calculate the spectra of the corresponding metric perturbations in the asymptotically dS Universe and, hence, cosmological observables in the post-inflationary epoch. Similarly, higher-point correlation functions in the CFT should lead to more complicated cosmological observables.
description: 43 pages, 1 figure
Mit Kindern mathematische Gespräche führen Ko-konstruktive Gespräche mit Kindern über mathematische Grunderfahrungen
Creators: name: Hermle, Patricia
Publisher: name: Zenodo
Year: 2016
Subjects: Sonderpädagogik
Mathematik
Kind
Masterarbeit

description: Um Bildungsprozesse von hoher heilpädagogischer Qualität zu initiieren, die den Bedürfnissen und Fähigkeiten der Kinder entsprechen, gilt es verschiedene Aspekte zu berücksichtigen. Neben der Attraktivität des Lerngegenstandes heisst dies insbesondere den Lernprozess als sozialen Prozess zu gestalten. Lernen soll demnach eine kooperative und kommunikative Aktivität sein, an der Kinder und Erwachsene aktiv beteiligt sind. In dieser Masterarbeit steht das ko-konstruktivistische Lernprinzip als Leitidee im Zentrum mit dem Ziel, mit vier- bis sechsjährigen Kindern im Dialog mathematisches Verständnis zu entwickeln. Die sprachlichen Mittel, die zum Interaktionsprozess gehören, werden in dieser Arbeit theoretisch hergeleitet, inhaltsanalytisch ausgewertet und in das heilpädagogische Wirkungsfeld der Frühförderung eingeordnet.
title: Architecture and Counter-revolution: The Ideology of the Historiography of the Soviet "Avant-garde"
Creators: name: Ruivo Pereira, Ricardo
Publisher: name: The Open University
Year: 2018

description: The thesis produces a history of the Western historiography of Soviet architecture, looking at its trends and the evolution of its narratives. It focuses on the development of historiographical categories and their transformations, as an exercise of what Reinhart Koselleck calls conceptual history, framed as a Marxist critique of ideology. While the Soviet “avant-garde” has seen growing popularity since the 1960s in the West, it has been systematically presented as precedent to politically charged present practices and discourses. This thesis frames this link to the present as a “historiographical link”, an ideological projection of meanings the Western historiography of Soviet architecture produces over its own geo-political reality. “The avant-garde” as a meta-category is itself constructed in this context as a means of legitimation of Western presents, where the relationship between history, design and politics is articulated through the category of what Tafuri calls “the project”, in a process that depoliticises the very idea of the politicisation of architecture itself.
Understanding and Designing Automation with Peoples' Wellbeing in Mind
Creators: name: Klapperich, Holger
name: Uhde, Alarith
name: Hassenzahl, Marc
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Nowadays, automation not only dominates industry but becomes more and more a part of our private, everyday lives. Following the notion of increased convenience and more time for the "important things in life", automation relieves us from many daily household chores - robots vacuum floors and automated coffeemakers produce supposedly barista-quality coffee on the press of a button. In many cases these offers are embraced by people without further questioning. Of course, automation frees us from many unloved activities, but we may also lose something by delegating more and more everyday activities to automation. In a series of four studies, we explored the experiential costs of everyday automation and strategies of how to design technology to reconcile experience with the advantages of ever more powerful automation.
description: 7 pages, 4 figures
Attention dynamics on the Chinese social media Sina Weibo during the COVID-19 pandemic
Creators: name: Cui, Hao
name: Kertész, János
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Understanding attention dynamics on social media during pandemics could help governments minimize the effects. We focus on how COVID-19 has influenced the attention dynamics on the biggest Chinese microblogging website Sina Weibo during the first four months of the pandemic. We study the real-time Hot Search List (HSL), which provides the ranking of the most popular 50 hashtags based on the amount of Sina Weibo searches. We show how the specific events, measures and developments during the epidemic affected the emergence of different kinds of hashtags and the ranking on the HSL. A significant increase of COVID-19 related hashtags started to occur on HSL around January 20, 2020, when the transmission of the disease between humans was announced. Then very rapidly a situation was reached where COVID-related hashtags occupied 30-70% of the HSL, however, with changing content. We give an analysis of how the hashtag topics changed during the investigated time span and conclude that there are three periods separated by February 12 and March 12. In period 1, we see strong topical correlations and clustering of hashtags; in period 2, the correlations are weakened, without clustering pattern; in period 3, we see a potential of clustering while not as strong as in period 1. We further explore the dynamics of HSL by measuring the ranking dynamics and the lifetimes of hashtags on the list. This way we can obtain information about the decay of attention, which is important for decisions about the temporal placement of governmental measures to achieve permanent awareness. Furthermore, our observations indicate abnormally higher rank diversity in the top 15 ranks on HSL due to the COVID-19 related hashtags, revealing the possibility of algorithmic intervention from the platform provider.
description: Main paper 17 pages, 5 figures. Supplementary information 6 pages, 4 figures. Published in EPJ Data Science
Power fluctuations in stochastic models of dissipative systems
Creators: name: Farago, Jean
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider different models of stochastic dissipative equations and theoretically compute the probability distribution functions (actually the associated large deviation functions) of the time averaged injected power required to sustain a nontrivial stationary state. We discuss the results and in particular draw from our results some general features shared by these distributions in realistic dissipative systems.
Xystosomus Schaum 1863
Creators: name: Erwin, Terry L.
Publisher: name: Zenodo
Year: 1973
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Xystosomus

description: The gruti group 1. X. gruti Bates (1871a:248) 2. X. ampliatus Bates (1884:290) 3. X. nigripalpis, new species 4. X. strigosus Bates (1871a:248) 5. X. iris, new species 6. X. sculpticollis Bates (1871b:266) 7. X. negrei , new species 8. X. aethotius, new species 9. X. anterocostis , new species 10. X. sublaevis Bates (1882:146) 11. X. sulcicostis Bates (1882:146) 12. X. apicisulcatus , new species 13. X. batesi , new species 14. X. seriatus , new species 15. X. ovatulus Bates (1871 a:247) 16. X. grossipunctatus, new species The elaphrinus group 17. X. elaphrinus Bates (1871b:267) 18. X. notiophiloides, new species 19. X. spangleri, new species The microtretus group 20. X. microtretus, new species 21. X. polytretus, new species The parainsularis group 22. X. parainsularis, new species 23. X. bisulcifrons, new species The inflatus group 24. X. inflatus (Schaum) (1859:202) 25. X. conirexus, new species The laeiris group 26. X. laeiris, new species 27. X. paralaevis , new species 28. X. laevimicans , new species 29. X. impressifrons, new species 30. X. niger, new species 31. X. tholus , new species 32. X. turgidus (Schaum) (1863:89)
description: Published as part of Erwin, Terry L., 1973, Studies of the subtribe Tachyina (Coleoptera: Carabidae: Bembidiini), Part I: A revision of the Neotropical genus Xystosomus Schaum, pp. 1-39 in Smithsonian Contributions to Zoology 140 on pages 1-39, DOI: 10.5479/si.00810282.140, http://zenodo.org/record/3828531
Anthophora (Clisodon) terminalis CRESSON 1869
Creators: name: Ebmer, A. W.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Anthophora
Anthophora terminalis

description: Anthophora (Clisodon) terminalis CRESSON 1869
 Abb. der sehr nahestehenden Anthophora furcata ♀ bei WESTRICH 1989: 569, MÜLLER, KREBS & AMIET 1997: 136.
 Anthophora terminalis ist in der Nearktis transkontinental verbreitet, von Alberta bis Quebec, südlich bis New Mexico und Arizona, im Osten bis North Carolina (HURD 1979: 2165). Auf die Nähe zur europäischen Anthophora furcata (PANZER 1798) wies schon SLADEN (1919: 125) hin, sowie auf dieselbe Nistweise im Holz morscher Baumstümpfe. MITCHELL (1962: 328) stellt ohne besonderen Kommentar A. terminalis als Unterart zu A. furcata.
Einen neuen Ansatz bringen DAVYDOVA & PESENKO (2002: 675): Sie halten an zwei getrennten Arten fest, die gut unterscheidbar seien durch die Behaarung der Tergite in beiden Geschlechtern, durch die Struktur von Sternit 5 (ein neues taxonomisches Merkmal – nennen aber nicht die Form dieses differenzierenden Merkmals!) und das männliche Genitale (geben auch hier keine Unterschiede an!). Beide Arten seien in Asien in weiter Zone sympatrisch, vom Ural bis ins südwestliche Yakutien und die Provinz von Irkutsk.
 Folgt man dieser taxonomischen Auffassung, wäre A. terminalis eine nearktische Art, die weit in die Ostpaläarktis hereinreicht – ob die über die Beringia von Alaska her eingewandert ist, ist wegen der Vegetation der Mammut-Steppe und des Fehlens von Wald sehr fraglich. Denn der wichtigste begrenzende Faktor für das Vorkommen von A. furcata in Europa ist das Vorhandensein von Totholzstrukturen als Nistgelegenheit und erst sekundär das Fehlen geeigneter Labiatae (Stachys) als Futterpflanzen (WESTRICH 1989: 568).
 Die Verbreitung von Anthophora furcata in Europa ist nur ungenügend dokumentiert, und wird auch in neuen Werken nur pauschal als "ganz Europa" genannt. Nach Norden in Finnland bis Ostrobottnia borealis N65 ° (ELFVING 1968: 34). Südlich der Alpen eher in den Gebirgen: Italien bis in die Abruzzen und Basilicata (leg. Pagliano). Spanien: Pyrenäen, Val d’Aneu. Griechenland: Olymp und Pangäon (leg. Ebmer).
description: Published as part of Ebmer, A. W., 2011, Holarktische Bienenarten - autochthon, eingeführt, eingeschleppt, pp. 5-83 in Linzer biologische Beiträge 43 (1) on pages 37-38, DOI: 10.5281/zenodo.4524335
title: Immersive visual music: how contemporary visual music practices have evolved and how immersive technologies can be employed to compose visual music works
Creators: name: Kanellos, E
Publisher: name: Bath Spa University
Year: 2024

description: This thesis explores contemporary visual music and its evolution. It addresses recent
trends and explores audio-visual relationships, practices, and aesthetics. Visual music has a
long tradition of negating representational elements in relation to sound, image, and space,
to the degree that the term is often used interchangeably with abstract animation and
absolute film. In recent years, immersive experiences have become more prevalent as an
aesthetic tendency in art practices and media. This shift towards representation, reality,
interactivity, simulation, and immersion has often been directed by new and available
technologies. The research presented here investigates how immersive technologies can be
employed effectively to compose visual music artwork and explores whether the shift to
immersive technologies that seem to naturally emphasise representation is likely to raise a
challenge regarding the traditional abstraction of visual music. This study consists of both practice and qualitative research. The literature and
contemporary practice review investigate visual music's evolution and current field by
discussing key theories and practices. This investigation includes identifying image and
sound-making techniques, technologies and media that can be experimented with in the
immersive visual music practice.
Supplementary interviews conducted with experts in the field of visual music provided
important insights into the process, tools and methodologies used in contemporary visual
music. The data extracted from these interviews and their analysis played a significant role in the creation of a new framework of visual music classifications, which is part of my
contribution to the field.
The insights, when compared with the secondary research, identified gaps or less
explored areas in the visual music practice and guided the direction of my visual music
practice submitted for this thesis. This practice involves experimenting with immersive
technologies and representational aesthetics. A series of experiments were conducted to
explore different technologies and practices identified in the research on producing
immersive visual music. By observing and comparing the experiments, several principles of
effective practice were proposed. A final piece incorporating these principles was produced
to demonstrate how immersive technologies can be effectively employed in creating
immersive visual music.
title: The Development and Evaluation of Non-invasive Methods to Characterise the Disease States of Patients Utilising Selective Discrimination, Gas Chromatography-Mass Spectrometry and Chemometrics
Creators: name: Turner, Diane Coral
Publisher: name: The Open University
Year: 2018

description: The ‘smell’ of illness, disease or age has been known for many centuries, mainly created by volatile organic compounds (VOCs). Dogs were first reported to detect cancer in 2004. Increasingly, the profiles of VOCs are being utilised as non-invasive diagnostic methods. The aim of the thesis was to develop and evaluate the performance of analytical methods to characterise the disease states of patients utilising selective discrimination, gas chromatography-mass spectrometry (GC-MS) and chemometrics. The primary analytical technique investigated was GC-Time-of-Flight-MS coupled with headspace solid-phase microextraction (HS-SPME-GC-ToFMS). A robust and sensitive method was developed by optimisation of all sample analysis parameters and was applied to clinical samples from bladder and prostate cancer patients and those with hepatic disorders. This evidence was obtained by quantifying an internal standard, present in every sample and blank throughout the studies. Based on these findings, large numbers of clinical samples were analysed with confidence. Statistically significant mathematical models were developed in partnership with Cranfield University to classify the diseased state of samples and clinically relevant controls. PLS-DA was determined as the best classifier. The results from the HS-SPME-GC-ToFMS studies were highly promising. Bladder cancer gave a mean accuracy of >80 % and even low-grade tumours gave a sensitivity of 73 %, superior to urine cytology. Higher clinical performance was obtained in the prostate cancer study, with BPH distinguishable from cancer. Hepatic disorders were better again (>86 %). Preliminary studies on sepsis detection also showed promise. Several recommendations were made to enable significant clinical results in the future based on analytical rigour.
Energy Profile Fluctuations in Dissipative Nonequilibrium Stationary States
Creators: name: Farago, Jean
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The exact large deviation function (ldf) for the fluctuations of the energy density field is computed for a chain of Ising (or more generally Potts) spins driven by a zero-temperature (dissipative) Glauber dynamics and sustained in a non trivial stationary regime by an arbitrary energy injection mechanism at the boundary of the system. It is found that this ldf is independent of the dynamical details of the energy injection, and that the energy fluctuations, unlike conservative systems in a nonequilibrium state, are not spatially correlated in the stationary regime.
description: accepted for publication in Journal of Statistical Physics
Bombus (Alpinobombus) hyperboreus SCHONHERR 1809
Creators: name: Ebmer, A. W.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Bombus
Bombus hyperboreus

description: Bombus (Alpinobombus) hyperboreus SCHÖNHERR 1809
 Fennoscandien, in Finnland nur aus der Gegend von Kilpisjärvi N69.03 E20.50, "die meisten sind Königinnen, nur wenige Männchen, und die äusserst selten erscheinenden Arbeiterinnen nie gefunden". Nord-Russland. Region von Magadan, Korjaksij-Gebirge, Chukotka. — Arktisches Alaska, Yukon, Northwest Territories, Grönland. Fakultativer Sozialparasit in Nestern von B. polaris.
description: Published as part of Ebmer, A. W., 2011, Holarktische Bienenarten - autochthon, eingeführt, eingeschleppt, pp. 5-83 in Linzer biologische Beiträge 43 (1) on page 38, DOI: 10.5281/zenodo.4524335
The masses of gauge fields in higher spin field theory on AdS(4)
Creators: name: Ruehl, W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Higher spin field theory on AdS(4) is defined by lifting the minimal conformal sigma model in three dimensional flat space. This allows to calculate the masses from the anomalous dimensions of the currents in the sigma model. The Goldstone boson field can be identified
description: 10 pages