Search results for "Rake"

The Legal International Wildlife Trade Favours Invasive Species Establishment: The Monk and Ring-Necked Parakeets in Spain

2018

The international wildlife trade is a lucrative business. Although a huge variety of animal groups are trafficked, the Psittaciformes (parrots) are amongst the most traded avian groups. Deliberate or accidental releases of imported parrots have led to the establishment of feral populations in many countries. Far from their native habitats, parrots may cause economic and ecological damage, and may even favour the transmission of zoonotic diseases. Despite this, the links between numbers of imported individuals and the establishment of non-native populations is not well known. In this study, we analysed data on imports of two well-known invasive parrots, the Monk Parakeet Myiopsitamonachus an…

The problem of misidentification between edible and poisonous wild plants: Reports from the Mediterranean area

2018

Abstract Today, in many European countries, people are looking for wild edible plants to experience new tastes and flavors, by following the new trend of being green and environmentally friendly. Young borage and spinach leaves can be easily confused by inexpert pickers with those of other plants, including poisonous ones, such as Mandragora autumnalis Bertol. (mandrake) or Digitalis purpurea L. (foxglove), common in southern and northern Italy respectively. In the last twenty years, several cases of intoxication by accidental ingestion of mandrake and foxglove have been reported. The purpose of this work was to perform a pharmacognostic characterization of young leaves from borage, mandrak…

Unrelenting spread of the alien monk parakeetMyiopsitta monachusin Israel. Is it time to sound the alarm?

2016

BACKGROUND Monk parakeets, Myiopsitta monachus Boddaert, are native to South America but have established populations in North America, Europe, Africa and Asia. They are claimed to act as agricultural pests in their native range, and their communal stick nests may damage human infrastructure. Although several monk parakeet populations are present in the Mediterranean Basin and temperate Europe, little empirical data are available on their population size and growth, distribution and potential impact. We investigated the temporal and spatial dynamics of monk parakeets in Israel to assess their invasion success and potential impact on agriculture. RESULTS Monk parakeet populations are growing…

Security Assessment of a Distributed, Modbus-based Building Automation System

2017

Building automation systems were designed in an era when security was not a concern as the systems were closed from outside access. However, multiple benefits can be found in connecting such systems over the Internet and controlling a number of buildings from a single location. Security breaches towards building automation systems are increasing and may cause direct or indirect damages to the target organization or even the residents of the building. This work presents an approach to apply a method of data flow recognition and environment analysis to building automation through a case study on a distributed building automation system utilizing the Modbus protocol at the sites and presents s…

Neural modelling of friction material cold performance

2008

The complex and highly non-linear phenomena involved during braking are primarily caused by friction materials’ characteristics. The final friction materials' characteristics are determined by their compositions, manufacturing, and the brake's operating conditions. Analytical models of friction materials' behaviour are difficult, even impossible, to obtain for the case of different brakes' operating conditions. That is why, in this paper, all relevant influences on the friction materials' cold performance have been integrated by means of artificial neural networks. The influences of 26 input parameters, defined by the friction materials' composition (18 ingredients), manufacturing (five pa…

Revealing community structures by ensemble clustering using group diffusion

2018

We propose an ensemble clustering approach using group diffusion to reveal community structures in data. We represent data points as a directed graph and assume each data point belong to single cluster membership instead of multiple memberships. The method is based on the concept of ensemble group diffusion with a parameter to represent diffusion depth in clustering. The ability to modulate the diffusion-depth parameter by varying it within a certain interval allows for more accurate construction of clusters. Depending on the value of the diffusion-depth parameter, the presented approach can determine very well both local clusters and global structure of data. At the same time, the ability …

Vallan verkostoissa : Per Brahe ja hänen klienttinsä 1600-luvun Ruotsin valtakunnassa

2011

Jyväskylän yliopiston kampus, Seminaarinmäki : Jyväskylä, Alvar Aalto 1951-1971 & Arto Sipinen 1970-1974

2017

Rationalistinen muodonmuutos : Paula Pihkalan suunnittelemat asuinkerrostalot 1950- ja 1960-luvuilla Helsingissä ja Tammisaaressa

2001

Villimiehen arkivaatteet : Lappeenrannan keskusta-alueen suunnittelu ja muutos vuosina 1956-1980

2014

Toisen maailmansodan jälkeiset modernisaation vuosikymmenet jättivät jäljen suomalaiseen kaupunkimaisemaan, kun vanhat puutalokaupungit ympäri Suomea rakennettiin uudelleen. Nopean rakentamisen vuosina standardisoitu elementtirakentaminen korvasi kaupunkien paikalliseen rakennusperinteeseen perustuneen rakennuskannan, minkä tuloksena kaupunkikeskustat ympäri Suomen alkoivat muistuttaa toisiaan. Tässä Suomen historian Pro gradu -työssä tarkastellaan Lappeenrannan keskustan kaupunkisuunnittelua ja muutosta vuosina 1956–1980. Tutkimuksen alkuperäislähteinä on käytetty Lappeenrannan kaupunginvaltuuston pöytäkirjoja, paikallista sanomalehteä Etelä-Saimaata sekä kaupungin keskustaa koskevia kaupu…