175,048 research outputs found
Derivation of robust predictor variables for modelling urban shrinkage and its effects at different scales
No full textCurrently, we observe diverging processes of growth and shrinkage in European Cities. Whereas in the 80ies and 90ies partially accelerated through the crash of the socialist system mostly urban growth and suburban development occurred in European Cities, today we find a general decline of population as well as an increase of aged people (as results of the demographic change in Europe and worldwide, Cloet 2003, Lutz 2001). These processes influence land use pattern (state of the environment) and land use changes in urban areas enormously. Land use pattern reflect the current socio-economic development of an urban area and give an idea of how the urban ecosystem is influenced by man. In doing so, for instance, surface sealing reduces the filtering and remediation capacity of soils and the water retention in general as well as minimises habitat quality for wetland species. At the same time, the ecosystem(s) provide so-called ecosystem services, benefits people obtain from ecosystems: water availability, drinking water, remediation and filtering of waste, places to settle, recreation facilities in nature and others. Their quantification enables to bring the change (availability/loss) of ecosystem services into relation with effective costs (economic sphere, Farber 2002, De Groot et al. 2002). The above mentioned population decline and related shrinkage processes will have enormous consequences on the demand and availability of ecosystem services needed to sustain a high and even increasing status of quality of life for European citizens in the next future. Therefore, the predictor variables describing on the one hand shrinkage-related land use changes and on the other its effects are most important but at the same time it is still a challenge; to extract such predictor variables from a huge catalogue of urban socio-economic and environmental indicators elaborated by many studies for different landscape types and scales; to derive relevant digital and spatially explicit data as model input to calculate the effects of land use (change) and; to validate the model results at the city and the quarter level (scale) as well as to prove the response of the (gained/released) ecosystem service (environmental quality) at the city and at quarter level (closing the circle). Here, the author will give some expressive examples showing the derivation of predictor variables for modelling peri-urban growth and inner city shrinkage as well as its effects on water balance, habitat quality (urban green network) and recreational space. Of major interest is the approach of how to tackle the problem of urban shrinkage in spatially explicit land use (change) modelling (Haase et al. 2004).
Cryptops sulcatus Haase 1887
No full text55. Cryptops sulcatus Haase, 1887 Fig. 10C Haase 1887: 80, fig V, 83. (as Cryptops sulcata n. sp.) Type locality and specimens. Patria [homeland]: Australia. Es lagen die auch von Kohlrausch untersuchten Stücke des Mus. Hamburg (Mus. Godeffroy 14.943) aus Sidney und Rockhampton vor [The specimens of the Museum Hamburg [Museum Godeffroy 14,943] from Sydney and Rockhampton, examined by Kohlrausch, were also present.]. Dimensions. Long. corp. [body length] 26 mm. Type material. Syntype (ZMH-A0000668). AUSTRALIA: Queensland, Rockhampton, [ca. 23°22’S, 150°30’E]. Preservation. 1 jar: Label 1. Cryptops austra [lis] Mus. God. 53 Roc[khampton]; Label 2. Cryptops sulcata Haase, Orig. zu australis Kohlr. nec Newp. M.G. 14943 Rockhampton; Label 3. Cryptops haasei Att. sulcatus Haase (Orig. zu australis Kohlr) M.G. Rockhampton; Label 4. Cryptops vetustus Haase, Type (pencil). Godeffroy label 14943. Old type catalogue. Weidner (1960), p. 67, No. 39. Holotype. Taxonomic remarks. The nomenclature for this species is confusing. Kohlrausch (1881: 127) originally described 25 specimens from Sydney and Rockhampton from the Godeffroy collections as C. australis Newport, 1845. Haase (1887) disagreed and re-described these specimens as a new species C. sulcata Haase, 1887. Attems (1903a: 105) noted that this name was preoccupied and changed it to C. haasei Attems, 1903. Bonato et al. (2016) lists C. sulcatus as a replacement name for C. australis Kohlrausch, 1881 (which would also be a preoccupied name) but we emphasize that Kohlrausch never described the Godeffroy specimens as a new species and identified the samples as C. australis sensu Newport. A name C. australis Kohlrausch, 1881 was therefore never proposed and the present specimen is the type of C. sulcatus and not C. australis. Note also that Weidner lists „ Cryptops australis Kohlrausch 1886 [sic!], 127 (nec. Newport 1845), Australien, Rockhampton, Holotype (Museum Godeffroy Nr. 14943)” in his catalogue (p. 67) but also Cryptops sulcata Haase, 1887 for the same specimen (p. 68). It seems that he was aware of the name change. We treat the present specimen as a syntype because additional specimens from Rockhampton and Sydney were offered for sale in the Godeffroy Sales Catalogue VII (Schmeltz 1879: 82) and are likely present in other collections. Kohlrausch lists 20 specimens from Sydney and 5 from Rockhampton which were almost certainly sold to other museums. Collection remarks. The specimen was collected by Amalie Dietrich who collected in this region on behalf of the Godeffroy estate between 1864 and 1866 (Bischoff 1913). Current systematic position. Cryptops haasei (Attems, 1903); see Attems (1903a: 105).Published as part of Thofern, Detlef, Dupérré, Nadine & Harms, Danilo, 2021, An annotated type catalogue of the centipedes (Myriapoda: Chilopoda) held in the Zoological Museum Hamburg, pp. 1-103 in Zootaxa 4977 (1) on page 42, DOI: 10.11646/zootaxa.4977.1.1, http://zenodo.org/record/481967
Opacuincola gretathunbergae Verhaegen & Haase 2021, sp. nov.
No full textOpacuincola gretathunbergae sp. nov. urn:lsid:zoobank.org:act: FCAB414F-A55A-4819-AFE1-CE2AF78D6B2F Figs 4 E–F, 5 D–E, 6 D, 8 C, 11 B, 12; Tables 1–2 Diagnosis The new species is most similar to Op. ngatapuna in terms of shape and epidermal pigmentation. It differs from the latter in 11 diagnostic DNA positions, in being much larger and in penial morphology. The penis and penial lobe of Op. gretathunbergae sp. nov. are considerably more delicate. Etymology The dedicatee of this new species is the Swedish teenage climate activist Greta Thunberg. Starting with a single-person school strike and demonstration to save our climate she has sparked the global movement “Fridays for Future” supported primarily by young people and managed to finally get momentum in global politics toward action against climate change after warnings of scientists have been largely ignored for more than 30 years. We wish her and the movement the endurance necessary to keep the pressure up! Material examined Holotype (Fig. 4E) NEW ZEALAND • Kahurangi National Park, W of Motueka, Cobb Dam Road; 41°04ʹ25.0ʺ S, 172°45ʹ18.5ʺ E; 1 Mar. 2016; G. Verhaegen and M. Haase leg.; on leaves, stones, woody debris in trickle along road; NMNZ.M.330191. Paratypes (Figs. 4F; 5 D–E) NEW ZEALAND • 21 specs; same collection data as for holotype; NMNZ.M.330192. Description SHELL (Figs 4 E–F, 5D–E). Blunt-conical to pupiform, about 1.65 times as high as than wide, whitetranslucent with brown periostracum; protoconch almost smooth with fine pits comprising ca 0.75 whorl (Fig. 6D); entire shell with 3.5 to 4.25 whorls, teleoconch initially with fine longitudinal ridges, then without structure apart from growth lines; umbilicus narrow; aperture orthocline, slightly higher than wide. OPERCULUM. Orange, paucispiral; nucleus submarginal, without peg. EXTERNAL FEATURES (Figs 4 E–F). Epidermis with irregular, large pigment blotches; eyes well developed and entirely pigmented; tentacles without particular ciliation. MANTLE CAVITY (n = 3). 10–12 ctenidial filaments; osphradium ovate-elongate, behind middle of gill. DIGESTIVE SYSTEM. Radula has formula R 5-6 1 5–6/3–4 3–4, L 5–6 1 6, M1 22–26, M2 31–32 (Fig. 8C); stomach without caecum; rectal loop pointing left in roof of mantle cavity, in males more distinct than in females. FEMALE GENITALIA (n = 2; Fig. 12). Ovary small, simple sac starting> 1.5 whorls below apex, comprising 0.25 whorl and not reaching stomach; renal oviduct first coiling 180° clockwise, then 270° counterclockwise; one distal, large receptaculum seminis lying against anterior area of bursa copulatrix; bursa copulatrix large, globular, extending behind much smaller albumen gland, bursal duct entering anteriorly; ovoviviparous, brooding at least three embryos in pallial oviduct, pallial oviduct as brood pouch with very short albumen gland and large capsule gland, the latter histologically uniform in CT scans. MALE GENITALIA (n = 4). Testis lobate sac, starting ca 0.75 whorl below apex, comprising up to 1 whorl, may reach stomach; vesicula seminalis coils along anterior half of testis; proximal vas deferens inserts close to middle of kidney-shaped prostate, distal vas deferens leaving anteriorly; penis long, slender, continuously tapering, pointed; distinct lobe on right side pointing forward (Fig. 11B). Remarks The sister relationship of Op. gretathunbergae sp. nov. to Op. ngatapuna was fairly well supported (Fig. 2). The average COI p-distance was 0.014 and there were eight type 1 characters in COI and three in 16S (Table 2). Morphologically, the new species is larger. Univariate tests comparing shell dimensions could not be conducted, though, because of the small sample size available for Op. ngatapuna. But the PCA (Fig. 3) and the data in Haase (2008) are clear regarding the size difference. Anatomically, only the male genitalia could be compared because this information is lacking for Op. ngatapuna (Haase 2008). The well-developed eyes indicate that the new species is a true crenobiont.Published as part of Verhaegen, Gerlien & Haase, Martin, 2021, All-inclusive descriptions of new freshwater snail taxa of the hyperdiverse family Tateidae (Gastropoda, Caenogastropoda) from the South Island of New Zealand, pp. 71-96 in European Journal of Taxonomy 731 on pages 86-87, DOI: 10.5852/ejt.2021.731.1205, http://zenodo.org/record/444691
Effects of temperature and pH on the activity and stability of HAase-<i>B</i>.
No full text<p>(A) Effect of temperature on HAase-<i>B</i> activity. The activity of HAase-<i>B</i> was measured at different temperatures. (B) Thermal stability of HAase-<i>B</i>. The residual activity was assayed in phosphate buffer (pH 6.0) at 42°C. (C) Effect of pH on HAase-<i>B</i> activity. The activity was measured at 42°C in a broad pH range buffer as described previously. (D) pH stability of HAase-<i>B</i>. Residual activities after incubation at various pH buffer solutions for 1 h or 2 h were assayed at pH 6.0 and 42°C. The graph shows data from triplicate experiments (mean ± SD).</p
Preface
No full textSchröder A, Haase C. Preface. In: Schröder A, Haase C, eds. Analogy, Copy, and Representation. Interdisciplinary perspectives. Bielefelder Schriften zu Linguistik und Literaturwissenschaft. Vol 29. Bielefeld: Aisthesis Verlag; 2018: 7-10.The Bielefeld English and American studies series (BEAST) in the Bielefelder Schriften zu Linguistik und Literaturwissenschaft ;
Advanced light trapping management by diffractive interlayer for thin-film silicon solar cells
No full textObermeyer P, Haase C, Stiebig H. Advanced light trapping management by diffractive interlayer for thin-film silicon solar cells. Applied Physics Letters. 2008;92(18): 181102
Towards Portable Natural Language Interfaces to Knowledge Bases - The Case of the ORAKEL System -
No full textCimiano P, Haase P, Heizmann J, Mantel M, Studer R. Towards Portable Natural Language Interfaces to Knowledge Bases - The Case of the ORAKEL System -. Data & Knowledge Engineering (DKE). 2008;65(2):325-354
On the complexity of quantified integer programming
No full textQuantified integer programming is the problem of deciding assertions of the form Q_k x_k ... forall x_2 exists x_1 : A * x >= c where vectors of variables x_k,..,x_1 form the vector x, all variables are interpreted over N (alternatively, over Z), and A and c are a matrix and vector over Z of appropriate sizes. We show in this paper that quantified integer programming with alternation depth k is complete for the kth level of the polynomial hierarchy
Effects of metal ions, metal ion chelators and surfactants on the activity of HAase-<i>B</i>.
No full text<p>(A) The influence of various metal ions on HAase-<i>B</i> (<i>*p</i><0.05. The activity of HAase-<i>B</i> without any metal ion was taken as control). (B) The influence of metal ion chelators on HAase-<i>B</i>. (C) The influence of several surfactants on HAase-<i>B</i>. The graph shows data from triplicate experiments (mean ± SD).</p
Expressive Resource Descriptions for Ontology-Based Information Retrieval
No full textTran DT, Bloehdorn S, Cimiano P, Haase P. Expressive Resource Descriptions for Ontology-Based Information Retrieval. In: Proceedings of the 1st International Conference on the Theory of Information Retrieval (ICTIR’07). 2007: 55-68
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