1,725,883 research outputs found
Oral History Interview with Sylvia Straka (Wronski), 1995 (part one)
No full textSylvia Straka (Wronski) was a former member of the Milwaukee Chicks baseball team. This interview was conducted by Lisa Hutchinson as part of a 1995 oral history course at the University of Wisconsin-Milwaukee
Oral History Interview with Sylvia Straka (Wronski), 1995 (part two)
No full textSylvia Straka (Wronski) was a former member of the Milwaukee Chicks baseball team. This interview was conducted by Lisa Hutchinson as part of a 1995 oral history course at the University of Wisconsin-Milwaukee
Phonétique et linguistique romanes : mélanges offerts à M. Georges Straka.
No full text"Bibliographie de M. Georges Straka": v. 1, p. [12]-22. Includes bibliographical references
Tachysphex stysi Straka 2008, sp. nov.
No full textTachysphex stysi sp. nov. (Figs. 1-7) Type material. HOLOTYPE: KAZAKHSTAN, J, ‘ Kasachstan mer. / Chagir 42,2N, 68,8E / 40 km S Aris / leg K. Denes 6.5.94’ [printed label] (OLML). PARATYPES: KAZAKHSTAN: same locality and date as holotype, 67 JJ 28 ♀♀, K. Deneš, J. Halada, Ma. Halada and J. Kadlec lgt.; Djambul 10 km E, 31.v.1994, 2 ♀♀, J. and Ma. Halada lgt. TAJIKISTAN: Aruk-Tau, Garavuti, 20.iv.1978, 1 ♀, J. Niedl lgt. TURKMENISTAN: Sandikatzi env., 3.-13.v.1993, 12 ♀♀, K. Deneš, J. Halada and Mi. Halada lgt.; Nebit-Dag, 1.v.1993, 1 ♀, Mi. Halada lgt. (all specimens in OLML and JSPC). Description. Male (holotype). Body length: 7.5 mm. Coloration. Apical half of mandible, tegula, metasomal segments I and II, all bases of femora, tibiae and all tarsi red. Other body parts all black. Head. Inner margin of mandible circularly emarginate, with one well developed tooth (Fig. 1). Labrum flat, not emarginated. Clypeus slightly convex; basomedian area slightly convex, densely punctate; bevel abrupt, as long as one third of clypeus, shiny (Fig. 1); lip arcuate, with median emargination and distinct lateral corners. Antennae short. Frons and vertex densely and uniformly punctate, punctures minute, most punctures less than one diameter apart, interspaces slightly shiny; setae shorter than MOD, erect to semierect. Mesosoma. Scutum densely but variably punctate, punctures less than half to one and half diameter apart, scutellum uniformly punctate, punctures about one diameter apart, all interspaces distinctly microsculptured, shiny. Mesopleuron finely rugose; its lower part with poorly defined punctation, punctures evanescent in microsculpture and rugosity, less than one diameter apart. Mesothoracic venter densely punctate, punctures ill-defined, about half diameter apart. Propodeal dorsum with conspicuous irregular longitudinal ridges, interspaces strongly sculptured to rugose, dull. Propodeal side obliquely ridged. Venter of all trochanters finely micropunctate, punctures no more than one diameter apart, interspaces shiny. Fore femoral notch semicircular, sparsely setose and with shiny surface (Fig. 2). Wings nearly hyaline; veins brown. Metasoma. Terga I-IV with weak, but distinct silvery apical bands; apical depressions on all terga slightly translucent, barely defined. Terga (including apical depressions) densely micropunctate, punctures ill-defined, evanescent in microsculpture. All sterna with uniform sculpture similar to that on terga, but punctures more distinct. Gonostyle with about 20 setae on apical half; setae uniform in length or nearly so. Volsella similar to that of T. prismaticus Straka, 2005 in shape (cf. Fig. 13 in STRAKA (2005)); setae on volsella uniformly or nearly so directed ventrally (Fig. 3). Variation in males. Body length: 5.5-7.5 mm. Head. Clypeal lip with or without median emargination; WML: LCL = 0.8-0.9; WCL: WML = 2.4-2.6.Antennae relatively short; LF1: WF1 = 1.7-1.8; LF3: WF3 = 1.8-1.9. Frons and vertex densely, uniformly punctate, punctures one to less than one diameter apart, interspaces shiny to slightly dull; WV: LV = 1.2-1.3. Female (general description). Body length: 7.0- 9.5 mm. Coloration. Mandible mesally, two or three distal tarsomeres, and gastral segments I-II or I-III red. Tegula reddish translucent. Other body parts all black. Head. Labrum flat, slightly emarginated medially. Clypeal lip with deep irregular median emargination (Figs. 5-6); transition between clypeal basomedian area and bevel relatively sharp, angulated; basomedian area convex, about as long as bevel; bevel concave, bright shiny; WML: LCL = 1.5-1.6, WCL: WML = 1.9. Antenna relatively short; LF1: WF1 = 3.0-3.1; LF3: WF3 = 3.0-3.1. Frons and vertex uniformly punctate, punctures less than one diameter apart, more than that on vertex, interspaces microsculptured, slightly shiny to dull (Fig. 7); setae short, erect to nearly erect; postocellar impression distinct and deep, obtusely Y-shaped; WV: LV = 1.1-1.3 (Fig. 7). Malar space and adjacent part of gena almost impunctate, integument bright and shiny; gena densely punctate. Mesosoma. Scutum and scutellum unevenly punctate. Central part of scutum sparsely punctate except for middle line, punctures one to many diameters apart; all margins and middle line densely punctate, punctures at most one diameter apart; all interspaces sparsely micropunctate, microsculptured and shiny. Scutellum more densely punctate in the middle than on sides, punctures variable in size and intermixed with micropunctation, half to two diameters apart, interspaces slightly microsculptured to unsculptured, shiny. Mesopleuron (including hypoepimeral area) finely, uniformly rugose throughout. Mesothoracic venter densely punctate. Propodeal dorsum uniformly rugose, in most specimens with more or less irregular longitudinal ridges. Propodeal side obliquely ridged, ridges conspicuous in most specimens. Venter of mid and hind trochanters with large punctures several diameters apart, interspaces shiny; punctures of fore trochanter minute, ill-defined, interspaces microsculptured, dull. Fore basitarsal rake with five preapical spines and one subapical (Fig. 4). Wings almost hyaline to slightly darkened at apex; veins brown. Metasoma. Terga I-IV with indistinct silvery apical bands; apical part of terga I-III slightly translucent. Tergal punctures minute, ill-defined, evanescent in fine microsculpture; apical depressions without distinct punctures; all terga dull. Nearly entire sternum II with well defined micropunctures, micropunctation of other sterna ill-defined, present only on sides; central part of all sterna with distinct large punctures that are two to many diameters apart; interspaces slightly shiny to dull. Pygidial plate slightly convex, superficially looking flat; sparsely punctate, interspaces not sculptured and shiny. Differential diagnosis. Tachysphex stysi sp. nov. is a member of the T. pompiliformis species group and the T. austriacus species subgroup. It resembles other members of the subgroup: T. austriacus, T. pekingensis Tsuneki, 1971, T. prismaticus Straka, 2005 and at least three other undescribed central Asian species (J. Straka, unpublished data) in having the characters of the subgroup (see above). It differs from these species in the following combination of characters. Male: inner margin of mandibles circularly emarginated with one well developed tooth (Fig. 1); mid trochanters ventrally distinctly and uniformly punctate; four metasomal terga with short silver apical bands (visible in fresh specimens); all tibiae largely and all bases of femora red. Female: scutum variably punctate, punctures half to one diameter apart in anterior parts, in the middle and along all margins, mesolaterally with large interspaces among punctures, punctures up to five diameters apart; mid and hind trochanters ventrally sparsely punctate, punctures large, several diameters apart; fore basitarsal rake usually with five apical spines (Fig. 4); at least inner surface of fore tibia red, mid and hind tibiae black. Males of T. prismaticus possess a similar shape of the mandibles as in male T. stysi sp. nov. (one tooth). However, both male and female of T. prismaticus differ from the new species by the black legs and moreover female T. prismaticus differ in the sculpture of the scutum, which is densely and uniformly punctate. Tachysphex austriacus and T. pekingensis are quite similar to each other. Both species possess two teeth on the inner margin of male mandibles, a uniformly sculptured scutum in females, and a densely punctate ventral part of all trochanters in both sexes. The tibiae are (at least partly) red in T. pekingensis but black in T. austriacus. Finally, males as well as females of the undescribed species are all black and males possess no distinct tooth on the inner margin of the mandibles. These species differ strongly from other species in body sculpture and vestiture. Name derivation. Named in honour of the excellent Czech entomologist Professor Pavel Štys (Charles University, Prague). Distribution. Kazakhstan, Tajikistan, Turkmenistan.Published as part of Straka, Jakub, 2008, Tachysphex stysi sp. nov. (Hymenoptera: Apoidea: Crabronidae) from Central Asia, pp. 691-696 in Acta Entomologica Musei Nationalis Pragae 48 (2) on pages 692-695, DOI: 10.5281/zenodo.534196
Ripiphorus caboverdianus Batelka & Straka 2011
No full textRipiphorus caboverdianus Batelka & Straka, 2011 Ripiphorus caboverdianus Batelka & Straka, 2011: 52. The holotype and one paratype are deposited in NMPC (ex coll. J. Batelka). HOLOTYPE (J): ‘ CAPE VERDE Isl. / BOAVISTA – rock N of / Sal Rei, 20.X.2009 / J. Batelka & J. Straka lgt. [p] // Ripiphorus caboverdianus n. sp. / Holotypus / J. Batelka & J. Straka det. 2009 [p, red label]’. PARATYPE (♀): ‘ CAPE VERDE Isl. / BOAVISTA – rock N of / Sal Rei, 20.X.2009 / J. Batelka & J. Straka lgt. [p] // Ripiphorus caboverdianus n. sp. / Paratypus / J. Batelka & J. Straka det. 2009 [p, red label]’. Current status. Valid species.Published as part of Batelka, Jan & Hájek, Jiří, 2015, Catalogue of type specimens of beetles (Coleoptera) deposited in the National Museum, Prague, Czech Republic, pp. 825-858 in Acta Entomologica Musei Nationalis Pragae 55 (2) on page 853, DOI: 10.5281/zenodo.530285
Processing and Visualization of Peripheral CT-Angiography Datasets
No full textIn dieser Arbeit werden die einzelnen Schritte der Bearbeitung von Datenssätzen, die mittels Computer TomographyAngiography (CTA) gewonnen wurden, vorgestellt. Periphäre CTA-Datensätze sind volumetrischeDatensätze, die pathologische Veränderungen der Blutgefäße der unteren Extremitäten des menschlichen Körpersdarstellen. Diese Veränderungen sind das Ergebnis verschiedener atherosklerotischer Krankheiten wie z.B. derPeripheral Arterial Occlusive Disease (PAOD) und ihre frühe und genaue Diagnose trägt wesentlich zur Planungeiner späteren interventionellen radiologischen Behandlung.Die Diagnose stützt sich auf die Visualisierung des abgebildeten Gefäßbaumes, wo die individuellen pathologischenVeränderungen, solche als Plaque, Verkalkungen, Stenosen des Gefäßdurchgangs und Verstopfungendesselben sichtbar werden. CTA entwickelte sich über die letzten Jahre zu einem robusten, genauen, kosteneffizientenAbbildungsverfahren für Patienten mit sowohl coronaren als auch arteriellen Erkrankungen. AlsFolge der CTA-Prozedur entsteht ein Satz von 1200 2000 transversalen Schnittbildern, die die Blutgefäße mittelseines intravenös verabreichten Kontrastmittels hervorheben. Die Anzahl der erzeugten Schnittbilder ist sehrhoch und infolgedessen ihre manuelle Untersuchung müheselig und zeitintensiv. Deswegen wurden Nachbearbeitungsmethodenzur schnelleren und intuitiveren Darstellung der abgebildeten Gefäße entwickelt. EinfacheVisualisierungen mittels traditionellen Techniken wie Maximum-Intensity Projection (MIP) oder Direct VolumeRendering (DVR) sind jedoch wegen des Vorhandenseins von Knochen im Datensatz, welche die Gefäßeverdecken, nicht zielführend. Deswegen ist eine Folge von Operationen, die Bearbeitungspipeline, die zurErzeugung von klinisch-relevanten Bildern mit unverdeckten Gefäßen führt, notwendig.Im ersten Schritt der Pipeline wird der Datensatz segmentiert und die Gewebearten darin klassifiziert umeine spätere Gefäßidentifikation und Knochenentfernung zu erlauben. Wegen der hohen Dichte und der räumlichenVariabilität der Gewebearten ist das eine komplexe Aufgabe. Traditionelle Bildverarbeitungstechnikenliefern keine brauchbaren Ergebnisse deswegen stellen wir in dieser Arbeit neue Zugänge, die zusätzliche, anatomische Information in den Segmentierungs- und Klassifizierungsprozeßeinbringen, vor. Wir schlageneinen probabilistischen Atlas vor, der das Modellieren der räumlichen und der Dichteverteilung in einem Datensatzerlaubt um ihre bessere Klassifizierung zu ermöglichen. Beim Atlasaufbau werden die non-rigid thin-platespline Warping und die Registrierung der Datensätze angewendet, um der hohen anatomischen Variabilitätzwischen Patienten Rechnung zu tragen. Das Atlaskonzept wird weiter durch die Watershed Transform um dieGenauigkeit der Registrierungsprozedur zu erhöhen erweitert. Als Alternative schlagen wir vor und evaluiereneine Technik zur Gefäßhervorhebung, die auf Hessscher Filterung basiert, um die Aufdeckung und Erkennungder Gefäßstrukturen ohne Operatorüberwachung zu erlauben.Im zweiten Schritt wird ein geometrisches Modell des Gefäßbaums konstruiert, der es erlaubt Informationenüber die Zentrallinien der Gefäße abzuleiten. Hierzu wird ein schon vorhandener Algorithmus verwendet, derauf dem sogenannten Vessel-Tracking aufbaut, das mittels optimaler Pfadsuche mit Verbesserungen um dasgeometrische Modell genauer zu machen implementiert ist.Der dritte Schritt der Bearbeitungspipeline, die Visualisierung, verlangt ein genaues Modell, da ihre Ergebnissewesentlich durch ein potenziell ungenaues Modell beeinflußt werden können, was zu klinisch irreführendenBildern führt. Um die Unzulänglichkeiten der Gefäßvisualisierung mittels herkömmlichen Techniken alsMIP, CPR oder DVR zu beseitigen schlagen wir ihre Verallgemeinerung als Focus & Context-Konzept, das wirVesselGlyph nennen, vor. VesselGlyph erlaubt verschiedene Visualisierungstechniken in einem Bild intuitivund systematisch zu kombinieren um bessere, umfassendere und unverdeckte Gefäßansichten für diagnostischenZwecke zu erzeugen.Um das Design und die Entwicklung der vorgeschlagenen Segmentierungs-, Modellierungs- und Visualisierungsalgorithmenzu fördern und ihre Anwendung in klinischer Umgebung zu ermöglichen haben wireinen Satz von Werkzeugen um die AngioVis-ToolBox entwickelt. In dieser Anwendung werden die einzelnenSchritte der Bearbeitungspipeline realisiert. Die Toolbox wird mit zusätzlichen Hilfsprogrammen vervollständigt die zusammen eine vollfunktionsfähige medizinische Arbeitsstationssoftware ergeben die regelmäßigum Patientendaten in einer klinischen Umgebung zu bearbeiten eingesetzt wird. - In this thesis, individual steps of a pipeline for processing of the peripheral Computed Tomography Angiography(CTA) datasets are addressed. The peripheral CTA datasets are volumetric datasets representing pathologiesin vascularity of the lower extremities in the human body. These pathologies result from various atheroscleroticdiseases as e.g. the Peripheral Arterial Occlusive Disease (PAOD) and their early and precise diagnosticssignificantly contributes to planning of a later interventional radiology treatment.The diagnostics is based on visualization of the imaged vascular tree, where individual pathologic changes,as plaque, calcifications, stenoses of the vessel lumen and occluded parts of the vessels are visible. CTA hasevolved within the recent years into a robust, accurate and cost effective imaging technique for patients withboth coronary and arterial diseases. As a result of the CTA scanning, a set of 1200 2000 transverse slices isacquired, depicting vessels enhanced by means of an intravenously injected contrast medium. The number ofslices is high and therefore their manual examination is laborious and lengthy. As a remedy, post-processingmethods were developed to allow faster and more intuitive visualization of the imaged vascularity. However,simple visualization by means of the traditional techniques as maximum-intensity projection (MIP) or directvolume rendering (DVR) is hampered due to the presence of bones in the dataset, which occlude the vessels.Therefore, a sequence of operations the processing pipeline is needed, leading to generation of clinicallyrelevant images which depict unobstructed vessels.In the first step of the pipeline the dataset is segmented and the tissues are classified, to allow subsequentvessel identification and bone removal. This is a complex task because of high density and spatial variability ofthe tissues. Traditional image processing techniques do not deliver acceptable results and therefore in the thesiswe present new approaches that introduce additional anatomic information into the segmentation and classificationprocess. We propose a probabilistic atlas which enables modeling of spatial and density distributions ofvessel and bone tissues in datasets, to allow their improved classification. In the atlas construction the non-rigidthin-plate spline warping and registration of the datasets are applied, to address the high anatomic variabilityamong the patients. The concept of the atlas is further extended by means of the watershed transform, to furtherimprove precision of the registration procedure. Alternatively, we propose and evaluate a technique for vesselenhancement based on Hessian filtering to allow detection and recognition of vessel structures without operatorsupervision.In the second step a geometric model of the vessel tree is constructed to derive information about the vesselcenterlines. Here, an already available algorithm based on the so-called vessel-tracking, implemented by meansof optimal path searching, is exploited with improvements to make the geometric model more precise.The third step of the processing pipeline visualization requires this model, since its results can be significantlyinfluenced by a potential imperfections, bringing in clinically misleading images. To address limitationsof the vessel visualization by means of the existing techniques as MIP, CPR or DVR we propose their generalizationin form of a focus & context-based concept called VesselGlyph. VesselGlyph enables to combineintuitively and systematically various visualization techniques to single a image to allow better, more comprehensiveand unoccluded view of vessels for the diagnostic purposes.To support the design and development of the proposed segmentation, modeling and visualization algorithmsand to enable their application in the clinical environment, we implemented a set of tools grouped in the AngioVisToolBox software. Within this application, individual steps of the processing pipeline are accomplished.The toolbox is complemented with additional utilities constituting together a fully-functional medical workstationsoftware which is regularly used to process patient data on a daily basis in the clinical environment.EG Graphics Dissertation Onlin
Georges Straka (1910-1993)
No full textHenry Albert. Georges Straka (1910-1993). In: Bulletin de la Classe des lettres et des sciences morales et politiques, tome 5, n°1-6, 1994. pp. 43-46
Academy of Count Straka
No full textThe goal of this thesis is to familiarize the reader with the history of the Foundation of Count Jan Petr Straka of Nedabylic and Libcan. Thesis focuses on the establishment of the foundation, construction of it's building, it's operations and the following disbandment of the institution during the period of first Czechoslovakian Republic. The thesis also discusses the staff of the academy. Keywords: education, foundation, aristocracy, academy, noble foundation, count Straka, school, gymnasium, educators, 19th century, 20th century, teacher
Gordy and Straka [ISCIENCE-D-22-02377R1]
No full textThis repository houses the original code generated for the analysis of Xenopus laevis tadpole behavior (eye movements) and electrophysiology data (abducens motoneuron extracellular discharge) for the manuscript by Gordy and Straka in iScience [ISCIENCE-D-22-02377R1]. Please consult the Read Me file for information on individual scripts and their usage for associated data files. All relevant data will be shared by the lead contact Dr. Hans Straka ([email protected]) upon request
Gordy and Straka [ISCIENCE-D-22-02377R1]
No full textThis repository houses the original code generated for the analysis of Xenopus laevis tadpole behavior (eye movements) and electrophysiology data (abducens motoneuron extracellular discharge) for the manuscript by Gordy and Straka in iScience [ISCIENCE-D-22-02377R1]. Please consult the Read Me file for information on individual scripts and their usage for associated data files. All relevant data will be shared by the lead contact Dr. Hans Straka ([email protected]) upon request.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV
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