Landscape, environment and community impacts of nuclear power

This paper is the third in a series of 8 that make up the evidence base for SDC report 'The role of nuclear power in a low carbon economy'.This document investigates the landscape impacts of all the processes involved in nuclear power from mining the fuel ore to power transmission lines. Water use, community and employment impacts are also covered.Publisher PD

Distributed Optimization in Energy Harvesting Sensor Networks with Dynamic In-network Data Processing

Energy Harvesting Wireless Sensor Networks (EH- WSNs) have been attracting increasing interest in recent years. Most current EH-WSN approaches focus on sensing and net- working algorithm design, and therefore only consider the energy consumed by sensors and wireless transceivers for sensing and data transmissions respectively. In this paper, we incorporate CPU-intensive edge operations that constitute in-network data processing (e.g. data aggregation/fusion/compression) with sens- ing and networking; to jointly optimize their performance, while ensuring sustainable network operation (i.e. no sensor node runs out of energy). Based on realistic energy and network models, we formulate a stochastic optimization problem, and propose a lightweight on-line algorithm, namely Recycling Wasted Energy (RWE), to solve it. Through rigorous theoretical analysis, we prove that RWE achieves asymptotical optimality, bounded data queue size, and sustainable network operation. We implement RWE on a popular IoT operating system, Contiki OS, and eval- uate its performance using both real-world experiments based on the FIT IoT-LAB testbed, and extensive trace-driven simulations using Cooja. The evaluation results verify our theoretical analysis, and demonstrate that RWE can recycle more than 90% wasted energy caused by battery overflow, and achieve around 300% network utility gain in practical EH-WSNs

Modeling of sound propagation in urban streets containing trees using Markovian technique

It is claimed that the trees may become a possible control method for noise in streets and hence contribute another step towards a sustainable environment. This paper examined the capability of an abatement scheme containing absorbent facades and trees in streets through a simulation model developed using the novel approach based upon Markovian techniques. The study showed that sound pressure level in a street containing trees relative to that in an empty street predicted by the Markov model was in good agreement with predictions obtained using commercial software, RAYNOISE model. Within the scope and assumptions in this study, it is shown streets containing trees and absorbent building façade result in sound reductions typically less than 1.5 dB. Hence trees in streets appear to have only a slight effect on sound attenuation, and thus make no significant contribution towards producing a sustainable environment in this respect

Major problems of organic farming – experience transmission

As a very particular agricultural system organic farming encounters many problems. Some of these problems are common to several countries where organic farming is applied. On that ground it might be useful to compare condition and levels of organic farming in more countries, find its common problems and thanks to experience transmission try to eliminate some of these problems preventively. Mutual comparison of organic farming in the Czech Republic with organic farming in Austria and actual conditions assessment provide to determine main problems of organic farming in both countries. Within the framework of analysis of organic farming several general problems of organic farming in both countries were defined, e. g. lower yields and higher costs per production unit or legislative restrictions. At the same time for the Czech republic were defined major problems related to agricultural and socioekonomic differences (e. g. dual characteristics of farm size, high share of imported bioproduction) and for Austria (high prices of bioproducts, lower rate of conversion to organic farming) and proposed suitable solutions based on experience of partnership country. If the number of partnership countries with differentially developed organic farming was broaden and there was defined common problems and aims for organic farming in general it might be a very important step for simplification and acceleration of its development

Ayer Hitam Forest (AHFR) from space using satellite remote sensing

There is a high demand to map and monitor the land use and assess their condition for ecological and economic reasons. Information on existing land and cover and their spatial distribution is a pre-requisite for any planning, development and management programme. In this study, Landsat TM data of 1998 were acquired over the AHFR and it's vicinity which covers an area more than 1, 300 ha. The objective of this paper is to map AHFR and assess the land cover of AHFR in 1998 as well as its surrounding area using remote sensing technology. Digital data processing and analysis were carried out using PCI/EASI PACE software, version 6.2 available in Faculty of Forestry, UPM. A false Colour Composite (FCC) of Landsat TM band 4-5-3 (R-G-B) was used in supervised classification using Maximum Likelihood Classifier (MLC). From a visual interpretation, several features of AHFR could be identified such as federal road, forest road, cleared land, built-up area, oil palm, water bodies and rubber plantation etc. Meanwhile, digital classification showed that seven land use types surrounding AHFR such as forest, secondary forest/shrubs, oil palm, rubber, built-up area, cleared land and water bodies could a easily be mapped out. The mean overall classification accuracy obtained is 86.08 percent with an average accuracy o] 85.64 percent. Satellite map of AHFR is found to be useful for the macro planning and management purposes especially on the Environmental Impact Assessment (EIA) if further development on the area is to be politicized

People, place, enterprise: proceedings of the first annual conference on Olympic Legacy 8 and 9 May 2008

The Olympic Legacy: People, Place, Enterprise conference took place at the University of Greenwich in May 2008. The first in a series of annual conferences, it brought together leading academics, policy makers and practitioners to debate the lasting legacy of the games. The conference had four themes: social and cultural regeneration; Olympic tourism; enterprise, including social enterprise and skills development, and education, providing a multi-dimensional perspective on the likely impacts of the forthcoming London Olympics

Livestock farming with care : summaries of essays

Wageningen UR is the country’s major research organisation in the field of livestock farming, providing the knowledge base for innovative livestock farming in our country and beyond and, as such, keen to play a role in the above mentioned debate. To this end an interdisciplinary task force was formed embodying a range of expertise, from livestock technology to system analysis and from economics to public administration. As one of the task force activities, Wageningen UR colleagues were invited to write an essay with their vision on specific aspects of this debate, based on their views and expertise. The result was a series of 30 essays, providing a wide overview of relevant issues with possible directions for solutions