Search results for "Planetary Science"
showing 10 items of 4367 documents
Impact of Land Cover Change Induced by a Fire Event on the Surface Energy Fluxes Derived from Remote Sensing
2015
Forest fires affect the natural cycle of the vegetation, and the structure and functioning of ecosystems. As a consequence of defoliation and vegetation mortality, surface energy flux patterns can suffer variations. Remote sensing techniques together with surface energy balance modeling offer the opportunity to explore these changes. In this paper we focus on a Mediterranean forest ecosystem. A fire event occurred in 2001 in Almodovar del Pinar (Spain) affecting a pine and shrub area. A two-source energy balance approach was applied to a set of Landsat 5-TM and Landsat 7-EMT+ images to estimate the surface fluxes in the area. Three post-fire periods were analyzed, six, seven, nine, and 11 y…
The REFLEX galaxy cluster survey VIII. Spectroscopic observations and optical atlas
2009
We present the final data from the spectroscopic survey of the ROSAT-ESO Flux-Limited X-ray (REFLEX) catalog of galaxy clusters. The REFLEX survey covers 4.24 steradians (34% of the entire sky) below a declination of 2.5 deg and at high Galactic latitude (|b| > 20 deg). The REFLEX catalog includes 447 entries with a median redshift of 0.08 and is better than 90% complete to a limiting flux fx = 3x10^{-12} erg s^{-1} cm^{-2} (0.1 to 2.4 keV), representing the largest statistically homogeneous sample of clusters drawn from the ROSAT All-Sky Survey (RASS) to date. Here we describe the details of the spectroscopic observations carried out at the ESO 1.5 m, 2.2 m, and 3.6 m telescopes, as wel…
Rare earth elements distribution in seawater and suspended particulate of the Central Mediterranean Sea
2004
Rare earth element (REE) content in suspended and dissolved phases from the Strait of Sicily (Central Mediterranean Sea) has been measured. Vertical profiles of several dissolved REEs along the water column reflect the 3-D oceanographic features of the studied area and identifies the different water masses present there. Shale-normalized REE distribution patterns and derived parameters calculated for the suspended particulate show different atmospheric dust-surface inputs and their interactions with seawater. Finally, combined information from [La/Yb]N, ratios, REE/La ratios and Eu anomalies measured in the suspended particulate suggest an important contribution of volcanic materials from t…
Sustainable Development and the Practice of Spatial Planning: A Proposal of Criteria for Measuring the Overall Sustainability of Planning Actions in …
2021
The sustainable city debate is gaining ground in recent years, featuring as a prominent issue in several policy documents of the European Commission, and enjoying support by the main organisations and institutions at international level. At the same time, improving local governance standards by involving citizens in local decision-making is a recurring issue in the debate on local democracy and enhancement of community cohesion. This paper presents an analysis of the European experience and best practice relating sustainable development to the day-to-day practice of spatial planning. The overall purpose is creating a proposal of indicators for measuring the sustainability of planning action…
Impacts of the COVID-19 Pandemic on Social Development and its Implications for the Transition to Sustainable Development
2021
Abstract The COVID-19 crisis has revealed the vulnerability of people, societies and economies and has forced a rethinking of the economic and social activities of an organization. The crisis requires strong responses based on solidarity, cooperation and responsibility. Socio-economic organizations (associations, cooperatives, alliances, and social enterprises) whose business models are based on these principles can help reshape economies and societies after the crisis.
Towards Municipal Environmental Development: Environmental Management Systems for Local Formal Education Establishments
2021
Educational institutions create certain environmental impacts in their operation – these impacts can be grouped into the sectors of waste, water, energy, transport and others. There is a need for educational institutions to adopt effective environmental management systems in order to reduce these impacts, as well as those of the whole municipality. The Eco-Schools programme is one of the most comprehensive and popular models of environmental education and management in the world. In recent years, the Eco-Schools programme has proved its effectiveness in numerous evaluations in several countries. The programme aims to raise awareness about environmental issues. Therefore, this programme enco…
Sustainability: Economic, Environmental and Public Issues. Marketing Possibilities
2021
The research aims to update the corporate marketing role in promoting sustainability. The study is based on the assessment of today’s economic, ecological, and social responsibility issues, as well as public issues associated with the development of sustainability. The following scientific research methods have been applied in the research: analytical, comparing, graphical, statistical and surveillance methods. The authors have studied sustainability issues, i.e., economic, environmental and social, in the world and particularly in Latvia, as well as their impact on public welfare. In research, there was chosen and analysed the Latvian food retail industry, which makes a significant contrib…
Impact of Regulatory Decisions of the Republic of Latvia on Sustainable Product Supply Provided by the Food Retail Chains
2021
This article reflects the impact of regulatory decisions of the Republic of Latvia on the food retail sector and sustainable product supply provided by food retail chains, as well as on operational trends. Attention has been drawn to the law of the Republic of Latvia on the key characteristics of foodstuffs and sales on the market. The research covers development of classification of the main instruments characterizing the products subject to the national regulation, as well as development of a scheme of the impact of the Latvian authorities on the operation of food retail chains. To implement the goal and tasks of the research, the authors have applied quantitative and qualitative research…
Coastal Sustainable Development Studies in Latvia: Integrated Local Social-Ecological Systems Governance
2021
Importance of sustainable coastal governance also in the Baltic sea region has been widely recognised and since such governance has to have integrative nature that requires horizontal cross-sectorial integration as well as involvement of all governance levels and subsequently organisation of vertical integration among the levels. Besides some succesfull local cases around Europe, mainly special outside projects based, there is to be recognized that the municipal integrated sustainable coastal governance has not been yet neither well and widely locally developed in practice nor sufficiently researched field in order to permit necessary design of adequate policy innovations. Practical develop…
Sustainable Marketing – Prospects and Challenges under Present Economy
2021
The article reflects on the attitude, understanding and knowledge on sustainable marketing, as well as the essence of sustainable marketing,the strategy of its practical use and the concept of development. As a result of research, definitions of sustainable developmentand sustainable marketing and a model of concept of motivation of its use at a company were developed and the strategy of practicaluse of a sustainable marketing and the motivation of use at Latvian companies was ascertained, confirming the initially advancedhypotheses. In order to fulfil the purpose and objectives, the authors used the following quantitative and qualitative methods ofeconomic research: polls, comparisons, gro…