Orthotrichum rogeri BRID. (Bryophyta) neu in Sachsen-Anhalt

Orthotrichum rogeri wurde kürzlich erstmals in Sachsen-Anhalt, im Harz, nachgewiesen. Hier wird über den zweiten Fund der Art in Sachsen-Anhalt berichtet. Der neue Fundort liegt nordöstlich Grockstädt im FFH-Gebiet 137 „Schmoner Busch, Spielberger Höhe und Elsloch südlich Querfurt“.Recently, Orthotrichum rogeri was found in Saxony-Anhalt for the first time, in the Harz mountains. Here, details of the second discovery of this species in Saxony-Anhalt are reported. The new station is situated north-east of Grockstädt in the Special Area of Conservation „Schmoner Busch, Spielberger Höhe und Elsloch südlich Querfurt“

Comparison of algorithms for calculation of the greatest common divisor of several polynomials

summary:The computation of the greatest common divisor (GCD) has many applications in several disciplines including computer graphics, image deblurring problem or computing multiple roots of inexact polynomials. In this paper, Sylvester and Bézout matrices are considered for this purpose. The computation is divided into three stages. A rank revealing method is shortly mentioned in the first one and then the algorithms for calculation of an approximation of GCD are formulated. In the final stage the coefficients are improved using Gauss-Newton method. Numerical results show the efficiency of proposed last two stages

Robust pricing and hedging of options on multiple assets and its numerics

We consider robust pricing and hedging for options written on multiple assets given market option prices for the individual assets. The resulting problem is called the multi-marginal martingale optimal transport problem. We propose two numerical methods to solve such problems: using discretisation and linear programming applied to the primal side and using penalisation and deep neural networks optimisation applied to the dual side. We prove convergence for our methods and compare their numerical performance. We show how adding further information about call option prices at additional maturities can be incorporated and narrows down the no-arbitrage pricing bounds. Finally, we obtain structural results for the case of the payoff given by a weighted sum of covariances between the assets.Comment: Forthcoming in SIAM Journal on Financial Mathematic

The monitoring of the plant species listed in Appendix II and IV of the Habitats Directive in Saxony-Anhalt

Für die Pflanzenarten der Anhänge II und IV der FFH-Richtlinie wurde im Rahmen der FFH-Berichtspflicht Deutschlands an die EU-Kommission ein Monitoringsystem eingerichtet. Hierfür sind die Bundesländer verantwortlich. In Sachsen-Anhalt gibt es aktuell drei Vorkommen von Angelica palustris, eines von Apium repens, 107 von Cypripedium calceolus, 20 von Jurinea cyanoides, fünf von Liparis loeselii und fünf von Orthotrichum rogeri. Für alle Vorkommen dieser Arten wurden in den Jahren 2011/2012 Monitoringflächen eingerichtet (für Cypripedium calceolus nur an 10 Vorkommen, für Jurinea cyanoides an 18 Vorkommen). Diese Vorkommen wurden erfasst und bewertet. Für Coleanthus subtilis, Lindernia procumbens und Luronium natans konnten die in den zurückliegenden Jahren letztmalig bestätigten Vorkommen aktuell (2011/2012) nicht nachgewiesen werden. Aufgrund des natürlicherweise unsteten Auftretens dieser Arten wurden an den letzten bekannten Fundorten Monitoringflächen eingerichtet. Die drei Hauptkriterien des Monitorings: Zustand der Population, Habitatstruktur und Beeinträchtigungen sowie artspezifische Unterkriterien sind durch bundeseinheitliche Vorgaben festgelegt, ebenso die Häufigkeit der Erfassung dieser Kriterien während der jeweils sechsjährigen Berichtsperiode. Darüber hinaus sieht das Landesmonitoring teilweise eine detailliertere Untersuchungstiefe und -frequenz vor.A monitoring system for the plant species listed in Appendix II and IV of the Habitats Directive was installed due to the reporting obligation of Germany to the EU commission. In Germany the federal states are responsible for this monitoring. Actually there exist three localities of Angelica palustris, one of Apium repens, 107 of Cypripedium calceolus, 20 of Jurinea cyanoides, five of Liparis loeselii and five of Orthotrichum rogeri in Saxony-Anhalt. Monitoring sites have been installed at all these localities in 2011/2012 (for Cypripedium calceolus only 10, for Jurinea cyanoides 18). These plant populations were recorded and evaluated. Some species found in the last decade could not be found in 2011–2012: Coleanthus subtilis, Lindernia procumbens and Luronium natans. However, due to the naturally unstable presence of these species monitoring sites are installed at these localities as well. The three main criteria of the monitoring (situation of the population, habitat structure and impairments) as well as specific subcriteria and the monitoring frequency of these parameters are prescribed at the federal level. The specific monitoring of Saxony-Anhalt provides a partly more detailed programme, both concerning investigation criteria and frequency

Physiological Effects of Training in Elite German Winter Sport Athletes: Sport Specific Remodeling Determined Using Echocardiographic Data and CPET Performance Parameters

Nine ski mountaineering (Ski-Mo), ten Nordic-cross country (NCC), and twelve world elite biathlon (Bia) athletes were evaluated for cardiopulmonary exercise test (CPET) performance and pronounced echocardiographic physiological cardiac remodeling as a primary aim of our descriptive preliminary report. In this context, a multicenter retrospective analysis of two-dimensional echocardiographic data including speckle tracking of the left ventricle (LV-GLS) and CPET performance analysis was performed in 31 elite world winter sports athletes, which were obtained during the annual sports medicine examination between 2020 and 2021. The matched data of the elite winter sports athletes (14 women, 17 male athletes, age: 18-32 years) were compared for different CPET and echocardiographic parameters, anthropometric data, and sport-specific training schedules. Significant differences could be revealed for left atrial (LA) remodeling by LA volume index (LAVI, p = 0.0052), LV-GLS (p = 0.0003), and LV mass index (LV Mass index, p = 0.0078) between the participating disciplines. All participating athletes showed excellent performance data in the CPET analyses, whereby significant differences were revealed for highest maximum respiratory minute volume (VE (maximum)) and the maximum oxygen pulse level across the participating athletes. This study on sport specific physiological demands in elite winter sport athletes provides new evidence that significant differences in CPET and cardiac remodeling of the left heart can be identified based on the individual athlete's training schedule, frequency, and physique

Remarkable finds of bryophytes in Hungary during the last two years (2015-2017)

Extant occurrences of 9 species without recent data (DD, DD-va in the Hungarian bryophyte redlist of 2010) were discovered in the period 2015-2017: Brachythecium campestre (Börzsöny: 8180.1, Mecsek: 9875.2, Vendvidék: 9163.2, Tiszántúl: 8496.2), B. plumosum (Zempléni-hg.: 7594.1, Mátra: 8186.1, Vértes: 8476.3), Bryum archangelicum (Börzsöny: 8179.1), Ephemerum serratum (=E. stoloniferum (Hedw.) L.T. Ellis & M.J. Price) (Börzsöny: 8080.3, Őrség: 9164.3), Jungermannia subulata (Mecsek: 9776.4), Marsupella emarginata (Börzsöny: 8079.2), Orthotrichum rogeri (Zemplénihg.: 7894.3), Pseudoleskea saviana (Mátra: 8186.1, Börzsöny: 8079.2, 8079.4), Schistidium confertum (Börzsöny: 8079.2, Mátra: 8186.1). 22 taxa were first recorded in Hungary since november 2015: Barbilophozia hatcheri (Budai-hg.: 8579.2), Brachythecium curtum (Zempléni-hg.: 7594.1, Börzsöny: 8079.4), Bryum tenuisetum (Csepel-sziget: 8679.2, Belső Somogy: 9971.1, Kemeneshát: 8768.1, Kőszegi-hg.: 8665.2), Campylopus subulatus (Kemeneshát: 8967.1), Crossidium squamiferum (Börzsöny: 8279.2), Didymodon tophaceus subsp. erosus (Duna-Tiszaköze: 9786.1), D. tophaceus subsp. sicculus (Duna-Tisza-közé: 9786.1, 9280.4, 8781.1), Ditrichum lineare (Zempléni-hg.: 7494.4), Fissidens bambergeri (Zempléni-hg.: 7494.2, Bükk: 8088.1, Börzsöny: 7979.4, 8179.1, 8180.1, Visegrádi-hg.: 8279.2, 8280.3, Budaihg.: 8479.1, 8479.4, Gerecse: 8377.1, Vértes: 8675.2, Kőszegi-hg.: 8664.4, 8665.1, Vendvidék: 9162.2, Zala: 9166.4), F. crispus (Börzsöny: 8079.2), Fossombronia incurva (Visegrádi-hg.: 8279.3, Őrség: 9164.3, Geresdi-dombság: 9777.3), Heterocladium heteropterum (Kőszegi-hg.: 8664.2), Pellia neesiana (Vendvidék: 9062.4, 9162.2), Plagiothecium latebricola (Kőszegi-hg.: 8664.2), Rhabdoweisia crispata (Kőszegi-hg.: 8664.2), Riccia beyrichiana (Visegrádi-hg.: 8279.2), Seligeria acutifolia (Pilis: 8279.4), Sematophyllum adnatum (Kemeneshát: 8967.1), Syntrichia ruralis var. epilosa (Keszthelyi-hg.: 9270.1, Kőszegi-hg.: 8665.1), Ulota crispula (Zempléni-hg.: 7594.1, Mátra: 8085.3, Börzsöny: 8080.1, Balatonfelvidék: 9171.1, Kőszegi-hg.: 8664.2, 8664.4, 8665.1, 8565.3, Vendvidék: 9062.4, 9163.1, Őrség: 9263.2, Kemeneshát: 8967.1, Zselic: 9873.2), U. intermedia (Zempléni-hg.: 7594.3, Börzsöny: 8079.2, Kőszegi-hg.: 8664.2, Vas-hegycsoport: 8764.4, Vendvidék: 9062.4, Őrség: 9164.3, 9264.1, Zselic: 9873.2), and Zygodon forsteri (Balatonfelvidék: 9071.3, 9171.1)