3,039 research outputs found
Principes philosophiques du chant
No full textIn the preface, Blanchet accuses J.A. Bérard, author of L'art du chant (Paris, 1755) of incorporating his material, and lists corrections to his workA Son Altesse Monseigneur le Prince Louis de Salm-Salm"--pages[iii]This copy from the Collection of Louise Hanson-Dye
Epirhyssa leonoreae Zuniga & Hanson 2024, sp. n.
No full text<i>Epirhyssa leonoreae</i> Zúñiga & Hanson, sp. n. <p>(Figs. 4, 7)</p> <p> <b>Diagnosis</b>. <i>Epirhyssa leonoreae</i> is very similar to <i>Epirhyssa oranensis</i>, but the former differs in having different colour patterns on the propodeum and metasoma. In the key to Peruvian species (Gómez <i>et al</i>., 2015), <i>E. leonorae</i> goes to couplet 16, but differs from the included species in having the occipital carina joining the hypostomal carina and having tergite I about 1.5 × as long as wide. The darkened shallow groove extending from the subalar prominence to the mesopleural fovea is unusual among <i>Epirhyssa</i> species.</p> <p> <b>Description. Female</b>. Fore wing length 10–16 mm. <b>Head</b> with occipital carina more or less complete, interrupted dorsally behind ocelli and often weak ventrally, but joining the hypostomal carina above base of mandible; posterior ocellus separated from eye by about 1.2–1.3 × its diameter; clypeus small, trapezoidal, with ventral margin straight to slightly convex; face as broad as medially high (from supraclypeal suture to base of antenna), smooth; antenna with 31 flagellomeres, apical flagellomeres much shorter and slightly wider than basal flagellomeres; gena smooth with sparse long setae ventrally. <b>Mesosoma</b> with strong epomia diverging from anterior margin of pronotum; mesoscutum with central lobe not overhanging pronotum; mesopleuron polished; subalar prominence strongly inflated; epicnemial carina quite weak, laterally reaching just above level of the lower corner of pronotum; hind coxa flat dorsally; fore wing with <i>cu–a</i> more or less opposite the base of <i>Rs</i> & <i>M</i>; 1st subdiscal cell moderately broadened distally, its width near outer end about 1.8–2.2 × it basal width; abscissa of <i>M</i> between 2 <i>rs–m</i> and 2 <i>m</i> –cu 0.2–0.4 × as long as 2 <i>rs–m</i>; <i>Rs</i> weakly and evenly bowed; propodeum 2.4 times as long (measured along midline) as width of propodeal orifice, polished with sparse setae laterally, without evident median longitudinal depression. <b>Metasoma</b> with tergite I 1.5–1.8× as long as posteriorly broad, dorsal surface mostly smooth; tergites II–VII with alutaceous sculpture over entire surface and more or less uniformly covered with short hairs; suranal cornus short, covered with dark hairs dorsally, apex circular; ovipositor projecting beyond apex of metasoma by 4.2–5.2× the length of the hind tibia.</p> <p> <b>Coloration</b>. Antenna mostly brownish with first and part of second flagellomeres black. Head yellow with black on apical 2/3 of mandibles and with a transverse black band between inner eye margins and passing through ocellar triangle; dark brown arc above occipital carina. Mesosoma yellow except black (or dark brown) on following: hind margin of propleuron; median posterior part of pronotum, extending back near dorsal margin of lateral pronotum but not reaching hind margin; three longitudinal stripes on mesoscutum, scuto-scutellar groove and hind margin of scutellum; tegula; anterior margin of mesopleuron, on a very shallow groove extending from subalar prominence to mesopleural fovea and on mesopleural groove; anterior and posterior margins of propodeum, and with a broad posteromedial mark on dorsal surface. Metasoma with tergite I entirely yellow, tergites II–VII with anterior 0.7 (approximately) brownish and posterior part yellow, except extreme posterior margin dark brown; ovipositor sheath brown. Legs predominantly yellow, with some light brown markings on femora, distal tarsal segments blackish; hind coxa dark brown to black on ventral and dorsal surfaces. Wings light yellowish.</p> <p> <b>Male</b>. Structure similar to female, metasoma with extensive yellow.</p> <p> <b>Material</b>. Holotype F: Costa Rica, Puntarenas Prov.: Est. La Casona, Monteverde, Sendero Orquideas, 1520 m, iv.1995, A. Azofeifa, INBIOCRI002543759 (USNM). Paratypes: 1F, Puntarenas Prov.: Buen Amigo, San Luis Monteverde, 1000–1350 m, xi.1994, Z. Fuentes, INBIOCRI002111842 (MZUCR); 1F, same data, ii. 1995, INBIOCRI002543222 (USNM); 1F, same data, iii.1993, INBIOCRI001123780 (USUC); 1F, same data, xi. 1995, INBIOCRI002358054 (MNCR); 1F, same data, ii. 1993, INBIOCRI002130120 (MZUCR); 1F, Guanacaste Prov.: Río San Lorenzo, Tierras Morenas, Z.P. Tenorio, 1050 m, vii.1993, G. Rodriguez, INBIOCRI001954443 (USUC); 1F, Guanacaste Prov.: Arenales, Estación Cacao, 1100 m, vi.1990, Malaise, INBIOCRI001692526 (MZUCR); 1F, Guanacaste Prov.: la Cruz, Estación Cacao, 1000–1150 m, xi–xii. 1996, A. Masis, INB0003138652 (MZUCR); 1F, same data, xi. 1994, J.F. Corrales, INBIOCRI002023075 (USNM); 1M, Puntarenas Prov.: Estación Altamira, 1 km S Cerro Bioley, 1450 m, i. 1998, R. Villalobos, INBIOCRI002413553 (USUC).</p> <p> <b>Comments.</b> This species has been collected on the western side of the Tilaran and Guanacaste mountain ranges. Nothing is known about its hosts.</p> <p> <b>Etymology</b>. This species is named in honor of Leonore Ortega Fonseca, a brilliant and tenacious woman, full of life, for her love and patience, companion of the first author.</p>Published as part of <i>Zuñiga, Ronald & Hanson, Paul, 2024, Two new species of Epirhyssa (Hymenoptera: Ichneumonidae: Rhyssinae) from Costa Rica, pp. 441-450 in Zootaxa 5406 (3)</i> on pages 444-445, DOI: 10.11646/zootaxa.5406.3.3, <a href="http://zenodo.org/record/10628032">http://zenodo.org/record/10628032</a>
Medical Imaging: Image Processing, K. M. Hanson, ed. Posterior sampling with improved efficiency
No full textThe Markov Chain Monte Carlo (MCMC) technique provides a means to generate a random sequence of model realizations that sample the posterior probability distribution of a Bayesian analysis. That sequence may be used to make inferences about the model uncertainties that derive from measurement uncertainties. This paper presents an approach to improving the efficiency of the Metropolis approach to MCMC by incorporating an approximation to the covariance matrix of the posterior distribution. The covariance matrix is approximated using the update formula from the BFGS quasi-Newton optimization algorithm. Examples are given for uncorrelated and correlated multidimensional Gaussian posterior distributions
Regole del canto fermo, e di sonare sopra la parte l'organo
No full textTitle from p. 1, added after much of the ms. was copiedPaper ms. with full vellum binding from a fragment of a [16th or 17th century?] chant book; the Tenebrae responsory "Astiterunt reges" appears on the front coverModern pagination in pencil in lower outer corners. Earlier incomplete and discontinuous foliation in ink on upper corners of some recto pagesPages 70 and 71 are glued together, as are p. 74 and 75Pages 9-118 ruled up in faint brown ink (apparently by the original scribe, though the lines are more widely spaced on p. 95-118) ; p. 6-7 have 4 line staves in the same red ink used for the diagram on p. 5. Pages 2-4, 8, 56-57, 73, 76, 92-94 and 102-106 left blankItems 1, 2, 3, 4 and 6 all appear to be in the same (late 15th century?) hand ; items 5, 8 and probably 9a all appear to be in another (16th century?) hand, as does the title on p. 1 ; item 7 is in a unique (16th or 17th century?) hand ; item 9b is in a unique (16th century?) hand. The first initial of the text of no. 6 is the most elaborately illuminated in the ms. and this may have originally been the first itemItem 2 is apparently a unique copy of an otherwise unknown work ; Item 3 occurs in full or in part in several other mss. ; item 4 consists of excerpts from Burtius' Musices opusculum printed in 1487The author of item 2 can be identified with the Nicolaus de Aversa cited in the "Ars cantus mensurabilis mensurata per per modos iuris" (ed. C. Matthew Balansuela, Lincoln [Nebraska], 1994. Cf. p. 63 "a composer known only through this treatise")Items noted by Herlin. 1. (p. 5) Prime namque dicuntur graves [with Guidonian hand] -- 2. (p. 9-21) Incipit ars plane musice s[ecundu]m fratr[e]m Nicolaum de Aversa -- 3. (p. 21-55) Ad laudem s[an]ctissi[m]e Trinitatis et gloriose Virginis Marie dulcissi[m]e matris sue aetatis curie c[el]estis triu[m]phatis. Incipit co[m]pendium muscicales multis doctoribus et philosophis editum et co[m]positum p[er] p[res]b[yter]um d[omi]n[u]m Nicolaum de Capua ordinatum su[um] an[n]o d[omi]ni m.cccc.xv -- 4. (p. 58-60) Nicolai Burtii Parmensis De signo ♭ molle et [b] quadri. Quanquam in secundo tractatu hujismo[d]i -- 5. (p. 61-64 ; 67-72) P[rim]o tuono festivo -- 6. (p. 65-67) Prouemium. Cum n[ost]re aetatis gaudea[n]t brevitate moderni -- 7. (p. 77-79) [Italian text concerning feast days] -- 8. (p. 80-90) Modo di sonare sop[r]a la parte con facilità -- 9. (p. 95-101) Avvertimento PrimoItems not noted by Herlin. [1a]. (p.6) Benedicam[us] Domino -- [1b]. (p.6-7) Primus punctus -- [9a]. (p. 107-114) La terza maggiore -- [9b]. (p. 115-118) Per concordare el contraponteThis copy from the Collection of Louise Hanson-Dye
Realization of a multinode quantum network of remote solid-state qubits
No full textThe distribution of entangled states across the nodes of a future quantum internet will unlock fundamentally new technologies. Here, we report on the realization of a three-node entanglement-based quantum network. We combine remote quantum nodes based on diamond communication qubits into a scalable phase-stabilized architecture, supplemented with a robust memory qubit and local quantum logic. In addition, we achieve real-time communication and feed-forward gate operations across the network. We demonstrate two quantum network protocols without postselection: the distribution of genuine multipartite entangled states across the three nodes and entanglement swapping through an intermediary node. Our work establishes a key platform for exploring, testing, and developing multinode quantum network protocols and a quantum network control stack.Accepted Author ManuscriptQID/Hanson LabALG/GeneralBUS/Quantum DelftQID/Wehner GroupQuantum Internet DivisionQuantum Information and SoftwareQN/Hanson La
Distributed entanglement and teleportation on a quantum network
No full textWe report on the realization of a multi-node quantum network. Using the network, we have demonstrated three protocols; generation of a entangled state shared by all nodes, entanglement swapping and quantum teleportation between non-neighboring nodes.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.QID/Hanson LabQCD/Vandersypen LabALG/GeneralBUS/Quantum DelftQID/Wehner GroupQN/Borregaard groepQuantum Computer ScienceQN/Hanson La
Coastal erosion at Hai Hau beach in the Red River Delta, Vietnam
No full textMany coastal areas in Vietnam suffer from erosion. One of the worst affected areas is the Hai Hau beach, located in the Red River delta in northern Vietnam. Over the last hundred years, vast parts of the beach have eroded at an average rate of approximately 25 m per year. Important agricultural land has vanished into the sea and families have been forced to abandon their houses because of the erosion is not explained but suggested reasons are for example dam construction, weak dikes and unfavourable hydrodynamic conditions The wave climate, and thus the sediment transport, in northernVietnam is highly dependent on the two main wind directions from the northeast and the south, because of the winter and ) summer monsoon, respectively . Vietnam is also.subject to sporadic typhoons that cause great damage when they strike the coast, especially in combination with storm surges. Based on a 20-year long wind record from 1976 to 1995, obtained from two islands outside the coast of northern Vietnam, the longshore transport rate over these years was determined by a one dimensional numerical wave model. The model consists of three independent parts: offshore waves, nearshore waves and -longshore sediment transport. This model indicates a southward-directed transport along the Hai Hau beach. In addition, sea maps and satellite photos from the 20th century were compared in order to find out the historic shoreline development generally. The main protection method that is generally used in Vietnam, as well as in Hai Hau district, is sea dikes. These dikes consist of an earth core covered by a revetment layer of cobbles. Unfortunately, these dikes are not strong enough to withstand the impact of harsh waves for any longer periods. Historically, a line of sea dikes has been destroyed at least once every decade. A couple of hundred meters behind the front sea dike typically lies another dike, ready to meet the waves when the first one breaches. Consequently, this defence arrangement is often recognized as a double dike system, but also as a retreat strategy since the erosion problem is not solved, just slowed down. The major cause of erosion is likely not due to human activities (such as dam buildings,or river cut-offs), instead because of the natural properties of Hai Hau coastal area, seasonally bounded longshore currents in combination with weak sea dikes favour erosion.KWP-collectio
Loophole-free Bell test using electron spins in diamond: second experiment and additional analysis
No full textThis is the dataset that belongs to the experiment described in the article "Loophole-free Bell test using electron spins in diamond: second experiment and additional analysis", online preprint at arXiv:1603.05705
[Correspondence R. Hanson to: [email protected]
Medical Imaging: Image Processing, K. M. Hanson, ed. Uncertainties in tomographic reconstructions based on deformable models
No full textDeformable geometric models fit very naturally into the context of Bayesian analysis. The prior probability of boundary shapes is taken to proportional to the negative exponential of the deformation energy used to control the boundary. This probabilistic interpretation is demonstrated using a Markov-Chain Monte-Carlo (MCMC) technique, which permits one to generate configurations that populate the prior. One of many uses for deformable models is to solve ill-posed tomographic reconstruction problems, which we demonstrate by reconstructing a two-dimensional object from two orthogonal noisy projections. We show how MCMC samples drawn from the posterior can be used to estimate uncertainties in the location of the edge of the reconstructed object
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No full text2D/3D registration makes it possible to use pre-operative CT scans during X-ray fluoroscopy guided interventions for navigation purposes. For this registration task a fast voxel-based method is presented, which uses a recently introduced similarity measure (pattern intensity). This measure is especially suitable for 2D/3D registration, because it is robust with respect to structures as, for instance, a stent visible in the X-ray fluoroscopy image but not in the CT scan. The method uses only a part of the CT scan for the generation of digitally reconstructed radiographs (DRRs) to accelerate their computation. Nevertheless, computation time is crucial for intra-operative application, because numerous DRRs must be computed. The suitability of different volume rendering methods for 2D/3D registration has been investigated therefore. A method based on the shear-warp factorization turned out to be especially suitable and builds the basis of the registration algorithm. The algorithm has been applied to images of a spine phantom and to clinical images. For comparison, registration results have been calculated using ray-casting. The shear-warp factorization based rendering method accelerates registration by a factor of up to seven compared to ray-casting without degrading registration accuracy. Using a vertebra as a feature for registration, computation time is in the range of 3-4s (Sun UltraSparc, 300MHz) which is acceptable for intra-operative application
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