Search results for "stock"
showing 10 items of 878 documents
Where Has All the Trading Gone? A Network Approach to European Stock Exchanges and Alternative Trading Venue
2011
This paper investigates the network features of European trading venues by analyzing the behavior of simultaneously quoted stock. Equity trading venues include both regulated Stock Exchanges (SEs) and Alternative Trading Venues (ATVs) and these represent the nodes of our network. The connections among these nodes are determined by choices of investors to exploit various venues in which a stock may be traded. Using trading volume data of nearly 22,000 equities we use social network analysis to measure prestige and connectivity between the various trading venues between 2005 and 2009. We find that the evolution of ATVs (including multi-lateral trading venues BATS, Chi-X and Turquoise, as well…
Changes in the value relevance of goodwill accounting following the adoption of IFRS 3
2014
Abstract This study examines the value relevance effects of changes in goodwill accounting in a European setting. International Financial Reporting Standard (IFRS) 3 replaced accounting rules that emphasized goodwill amortization over short useful lives which kept goodwill balances low. Goodwill accounting under IFRS 3 largely relies on manager fair value estimates of acquired business units. Using Swedish data, we show that goodwill amortizations were not value-relevant prior to the adoption of IFRS 3. However, impairments reported in addition to amortization were significantly related to stock returns during that period. In contrast, under the impairment-only regime prescribed by IFRS 3, …
Life Cycle Assessment of an Ambitious Renovation of a Norwegian Apartment Building to nZEB Standard
2018
Author's accepted manuscript. The upgrading of building infrastructure to modern standards represents a key tool for reducing global energy demand and emissions from buildings. In Norway, building upgrades have been prioritized despite the relatively low carbon intensity of the Norwegian energy mix through various incentive programs and continual improvement in building standards. Prioritizing upgrades is important as up to 90% of the existing Norwegian building stock is expected to remain standing by the year 2050. The overall impact of upgrading buildings is expected to be a net benefit to the environment but this is primarily in operation, and many studies on energy do not include the ma…
Early Neolithic diet and animal husbandry: stable isotope evidence from three Linearbandkeramik (LBK) sites in Central Germany
2011
Abstract The first appearance of the Neolithic Linearbandkeramik (LBK) in Central Germany occurred during the 6th millennium BC. However, though LBK sites are abundant in the German loess areas, there are only a few studies that reconstruct the diet of these first farmers using biochemical methods. Here we present the largest study undertaken to date on LBK material using stable isotope analysis of carbon and nitrogen to reconstruct human diet and animal husbandry strategies. We analyzed the bone collagen of 97 human individuals and 45 associated animals from the sites of Derenburg, Halberstadt and Karsdorf in the Middle Elbe–Saale region of Central Germany. Mean adult human values are −19.…
A bottom-up harmonized energy-environmental models for europe (BOHEEME): A case study on the thermal insulation of the EU-28 building stock
2021
Abstract The paper presents a methodological approach, called “BOttom-up Harmonized Energy-Environmental Models for Europe” (BOHEEME), that combines bottom-up modeling, energy dynamic simulation, and life cycle assessment for evaluating and comparing the energy and environmental effects of different renovation strategies of the residential EU building stocks, from micro to the macro level. The study defines 672 building models representative of the residential EU-28 building stocks built before 2010, called archetypes, and the improvement of their envelope, applying different insulation materials from a traditional one to bio-based materials and studying their environmental effects via LCA.…
Artificial neural network decision support tool for assessment of the energy performance and the refurbishment actions for the non-residential buildi…
2017
The public buildings sector represents one of the most intensive items of EU energy consumption; the application of retrofit solutions in existing buildings is a crucial way to reduce its impact. To facilitate the knowledge of the energy performance of existing non-residential buildings and the choice of the more adequate actions, Public Administrations (PA) should have the availability of proper tools. Within the Italian project "POI 2007-13", a database and a decision support tool, for easy use, even to a non-technical user, have been developed. A large set of data, obtained from the energy audits of 151 existing public buildings located in four regions of South Italy have been analysed, …
Energy and environmental assessment of heritage building retrofit
2020
In the transition to a low-energy economy, the building stock renovation should address the reduction of the environmental impacts, by means of suitable energy retrofits oriented to meet current energy efficiency regulations, construction guidelines, and standards on comfort and operation. With regard to the historic segment of the building stock, suitable refurbishment policies are needed to avoid the loss of their heritage values, even if this is a complex issue requiring interdisciplinary approaches, dedicated diagnostic procedures, and specific tools. In this paper a suitable method for energy and environmental assessment specifically devoted to historical building retrofit, following a…
Energy and economic analysis and feasibility of retrofit actions in Italian residential historical buildings
2016
Abstract The application of retrofit actions to existing building stocks can improve the energy performance of the residential sector. In this context, particular attention should be given to historical buildings, which represent a large part of the Italian building stock. To improve the energy performance of them, adequate retrofit actions must be applied. Many studies and regulations have focused on identifying the best refurbishment measures. However, the selection of these measures is difficult due to restrictive regulations, which are dictated by the Ministry of Cultural Heritage and Activities, high retrofit costs, and variable climate zones. Thus, energy renovations in Italian buildi…
An innovative approach to manage uncertainties and stock diversity in the EPBD cost-optimal methodology
2018
The EU Energy Performance of Buildings Directive (EPBD) 2010/31/EU is a step in the right direction to promote near zero energy buildings (NZEB) in a step-wise manner, starting with minimum energy performance and cost optimal thresholds for “reference buildings” (RBs) for each category. Nevertheless, a standard method for defining RBs does not exist, which led to a great divergence between MS in the level of detail used to define RBs for the EPBD cost-optimal analysis. Such lack of harmonisation between MS is further evident given the resulting large discrepancies in energy performance indicators even between countries having similar climate. Furthermore, discrepancies of 30% or higher betw…
A Cluster Analysis of Stock Market Data Using Hierarchical SOMs
2016
The analysis of stock markets has become relevant mainly because of its financial implications. In this paper, we propose a novel methodology for performing a structured cluster analysis of stock market data. Our proposed method uses a tree-based neural network called the TTOSOM. The TTOSOM performs self-organization to construct tree-based clusters of vector data in the multi-dimensional space. The resultant tree possesses interesting mathematical properties such as a succinct representation of the original data distribution, and a preservation of the underlying topology. In order to demonstrate the capabilities of our method, we analyze 206 assets of the Italian stock market. We were able…