Search results for "UHI"

Preparation and Characterization of Pulp and Paper Mill Sludge-Activated Biochars Using Alkaline Activation : A Box–Behnken Design Approach

2022

This study utilized pulp and paper mill sludge as a carbon source to produce activated biochar adsorbents. The response surface methodology (RSM) application for predicting and optimizing the activated biochar preparation conditions was investigated. Biochars were prepared based on a Box–Behnken design (BBD) approach with three independent factors (i.e., pyrolysis temperature, holding time, and KOH:biomass ratio), and the responses evaluated were specific surface area (SSA), micropore area (Smicro), and mesopore area (Smeso). According to the RSM and BBD analysis, a pyrolysis temperature of 800 °C for 3 h of holding and an impregnation ratio of 1:1 (biomass:KOH) are the optimum conditions f…

Karkku

Night Thermal Unmixing for the Study of Microscale Surface Urban Heat Islands with TRISHNA-Like Data

2019

International audience; Urban Heat Islands (UHIs) at the surface and canopy levels are major issues in urban planification and development. For this reason, the comprehension and quantification of the influence that the different land-uses/land-covers have on UHIs is of particular importance. In order to perform a detailed thermal characterisation of the city, measures covering the whole scenario (city and surroundings) and with a recurrent revisit are needed. In addition, a resolution of tens of meters is needed to characterise the urban heterogeneities. Spaceborne remote sensing meets the first and the second requirements but the Land Surface Temperature (LST) resolutions remain too rough…

Semantic annotation and big data techniques for patent information processing

2017

This thesis analyzes approaches to generate semantic annotations on patent records, as well as on other structured data, by relying on the structure and semantic representation of documents. Information in patent records reflects how real-world technologies evolve, and the approximately 3 million annual new patent applications capture the global inventive frontier. The volume of this information is too big to be effectively analyzed purely with human effort, necessitating Big data approaches to analyze it with computer aided tools and techniques. Big data is a term that describes a massive volume of structured, semi structured and unstructured data that is so large to the point that it is d…

CONFRONTO TRA DATI DI TEMPERATURA RILEVATI IN AREE URBANE E IN AREE AGRICOLE LIMITROFE

2008

Il fenomeno noto come “isola di calore urbana” (Urban Heat Island, UHI), che riguarda prevalentemente i paesi più industrializzati, consiste nell’aumento della temperatura dell’aria nei centri abitati per effetto dell’urbanizzazione. La verifica di tale fenomeno è stata eseguita in Sicilia instaurando un confronto tra le temperature massime, minime e le escursioni termiche di coppie di stazioni di misura, poste rispettivamente all’interno e all’esterno di alcuni centri urbani minori nel periodo 2002-2005. L’analisi è stata sviluppata a scala annuale e semestrale (separando la stagione tipicamente secca, da Aprile a Settembre, da quella umida), in modo da rilevare in quali periodi dell’anno …

Mesures de la température et spatialisation de l’Ilot de Chaleur Urbain à Dijon

2015

The Territorial Climate Energy Plan (PCET) of the agglomeration of Dijon (Grand Dijon) includes ameasurement campaign (6 June to 28 September 2014). 50 Hobo proV2 thermometers were deployed. The selection of siteswas carried out so that the different types of urban environment (Oke, 2006) are documented. The Urban Heat Island (UHI)is discernible mainly at night, when radiative conditions are well established the day before. It is estimated to 1°C onaverage for the summer, 3-4°C during nights of fine weather. It reached 6°C during the warmest periods of the 2014 summer.A cool axis through the agglomeration shows that vegetation and water can sensibly mitigate the ICU effect.

Kalmbergin kartasto R III : List 9

1855

Jalkapalloa ja kuvataidetta : Pentti Veroma (1903-1979)

2015

Pentti Veroma (b. Weckman) was born in Turku, the old capital of Finland in 1903. He has become known to the next generations especially in his home town as a painter. In his youth, he practiced athletics in Paavo Nurmi’s own sport club Turun Urheiluliitto (Turku Sports Union). Later Veroma started to play football in the team of Turun Urheiluliitto. In the early 1920s, the language question was a significant factor in the football, also in Turku. Pentti Veroma was in 1922 one of the founders of Turun Palloseura (Turku Football Club). Later one of the most prominent football clubs in Finland. The team of Turun Palloseura was recruited from the players of the Turun Riento and Turun Urheiluli…

"Urheilu yhdistää kansat" : Urho Kekkonen Suomen ja Viron urheilusuhteiden rakentajana

2015

Anomaly Detection from Network Logs Using Diffusion Maps

2011

The goal of this study is to detect anomalous queries from network logs using a dimensionality reduction framework. The fequencies of 2-grams in queries are extracted to a feature matrix. Dimensionality reduction is done by applying diffusion maps. The method is adaptive and thus does not need training before analysis. We tested the method with data that includes normal and intrusive traffic to a web server. This approach finds all intrusions in the dataset. peerReviewed