Search results for "Wirtschaft"
showing 10 items of 91 documents
Assessing sampling coverage of species distribution in biodiversity databases
2019
Abstract Aim Biodiversity databases are valuable resources for understanding plant species distributions and dynamics, but they may insufficiently represent the actual geographic distribution and climatic niches of species. Here we propose and test a method to assess sampling coverage of species distribution in biodiversity databases in geographic and climatic space. Location Europe. Methods Using a test selection of 808,794 vegetation plots from the European Vegetation Archive (EVA), we assessed the sampling coverage of 564 European vascular plant species across both their geographic ranges and realized climatic niches. Range maps from the Chorological Database Halle (CDH) were used as bac…
Thirty years unmanaged green roofs: Ecological research and design implications
2016
Abstract The variations in species composition and assemblage of unmanaged simple-intensive green roofs in Hannover, Germany, were investigated over a thirty year period, in order to assess the persistence of the initial seed mixture and to evaluate floristic changes. The roofs were greened in 1985 with soil-based turf rolls sown with a mixture of five grasses (Festuca rubra, Festuca ovina, Agrostis capillaris, Lolium perenne and Poa pratensis). Three sets of 120 phytosociological releves, sampled in 1987, 1999 and 2014, have been compared to assess: (1) nestedness vs spatial turnover, (2) functional diversity and (3) the importance of vegetation dynamics on green roof performance and desig…
The last-mile vehicle routing problem with delivery options
2021
AbstractThe ongoing rise in e-commerce comes along with an increasing number of first-time delivery failures due to the absence of the customer at the delivery location. Failed deliveries result in rework which in turn has a large impact on the carriers’ delivery cost. In the classical vehicle routing problem (VRP) with time windows, each customer request has only one location and one time window describing where and when shipments need to be delivered. In contrast, we introduce and analyze the vehicle routing problem with delivery options (VRPDO), in which some requests can be shipped to alternative locations with possibly different time windows. Furthermore, customers may prefer some deli…
A plant sociological approach for extensive green roofs in Mediterranean areas
2013
Extensive Green roofs can be an important mean for environmental mitigation if designed according to the principles of restoration ecology. Moreover, if optimally executed, properly managed and of sufficient extension, they could be assimilated to meta-populations of natural habitats, worth to be included in the biodiversity monitoring networks. The best example supporting this hypothesis is the Lake water plant Moos in Wollishofen (Zurich, Switzerland) where, on three 100 years old units of extensive green roofs, occur most of the typical flora of Mesobromion, including high density of some endangered orchid species. With this work, we propose a methodology approach for green roofs in Medi…
Polyester microplastic fibers affect soil physical properties and erosion as a function of soil type
2021
Microplastics are recognized as a factor of global change contaminating many environmental compartments. Agricultural soils are very likely to receive microplastic contamination and are of particular concern due to their role in food production. Microplastic fibers have already been shown to be able to affect soil properties, but their effect on different soil types is poorly understood. Moreover, limited information is available on how the presence of this pollutant can affect soil water erosion processes, which are extremely important issues in many environments. In the light of this, we performed two experiments (carried out on a microscale) to investigate how the presence of polyester m…
Das Buch der Güter Livlands und Oesels
1863
Economic evaluation of prolonged and enhanced ECG Holter monitoring in acute ischemic stroke patients
2019
Objective: Atrial fibrillation (AF) is a major cause for recurrent stroke, has severe impact on a patient's health and imposes a high economic burden for society. Current guidelines recommend 24 h ECG monitoring (standard-of-care, SoC) to detect AF after stroke to reduce the risk of future events. However, paroxysmal AF (PAF) is difficult to detect within this period as it occurs infrequently and unpredictably. In a randomized controlled trial (Find-AF(RANDOMISED)), prolonged and enhanced Holter ECG monitoring (EPM) revealed a significantly higher detection rate of AF compared to SoC, although its cost-effectiveness has not yet been investigated. Methods: Based on the data of FIND-AF(RANDOM…
Ansichten über die Ursachen und die wahrscheinliche Dauer der Wohlfeilheit aller Landeserzeugnisse, besonders mit Rücksicht auf Liv- und Esthland, ne…
1825
Die deutschen Ostseeprovinzen Rußlands: geschichtlich, kulturell und wirtschaftlich dargestellt von Kennern [Deutschen Ostseeprovinzen Russlands...]
1918
Inhalt: Geleitwort zu der aus Anlaß der Livland-Estland-Ausstellung erscheinenden Neuauflage / Theodor Schiemann. Geleitwort / Dr. Theodor Schiemann, Dr. Otto v. Beh. 1). Ueberblick über die Geschichte der deutsche Kolonie an der Ostsee / von Theodor Schiemann. 2). Die Bevölkerung / von H.v.R. 3). Politische Verfassung und Selbstverwaltung des Landes / von Georg Freiherrn v. Satz. 4). Die Städte / von Arend Buchholtz. 5). Agrarverfassung und Landwirtschaft / von Wilhelm Bührig. 6). Handel und Industrie / von Hermann Hassel. 7). Evangelisch-lutherische Kirche und Gewissensfreiheit / von Christian v. Bornhaupt. 8). Das Unterrichtswesen / von Leopold Krüger. 9). Recht und Gericht / von Otto v.…
Vidzemes Lielais Zviedru Kadastrs kā saimniecības vēstures avots
1942
Kadastrs - sistematizēti kādu zemes vai ūdens nogabalu vai citu objektu dati; ar nodokļiem apliekamo zemju saraksts un novērtējums pilsētās un laukos. Zemes kadastru sāka ar zemes uzmērīšanu un vērtēšanu, vienlaikus veicot muižu redukciju, atsavinot lielāko daļu muižas zemju, kuras nodeva Zviedrijas valsts pārziņā. Tas bija labi izstrādāts kadastrs, un to izmantoja no 1691. līdz 1911. gadam, t. i., 220 gadus. Tas pasaulē ir samērā mazpazīstams, un tagadējās Latvijas un Igaunijas teritorijā tam bija tikai lokāla nozīme. Muižu redukcija .17. gs. 2. pusē, pieaugot absolūtisma tendencēm Eiropā, Zviedrijas karalis Kārlis XI (Karl XI) centās nostiprināt varu visā valstī. Viens no pasākumiem bija …