148,242 Works

VR zur Unterstützung des kollaborativen Arbeiten

Andreas Kunz & Christian Spagno
Design for X: Beiträge zum 13. Symposium

Probabilistic risk-based LC NPV Model

Gerhard Girmscheid
Innovations in Structural Engineering and Construction

Construction of a Three-sided Immersive Telecollaboration System

Christian Spagno & Andreas Kunz
Proceedings / IEEE Virtual Reality Conference

Critical consideration and improvement of the FMEA

Alois Breiing & Andreas Kunz
Proceedings of Tools and Methods of Competitive Engineering - TMCE 2002, 2002, Wuhan, China

Assessing toxic impacts on aquatic ecosystems in life cycle assessment (LCA)

Jérôme Payet
In the last decade, several Life Cycle Assessment (LCA) methods for assessing impact of products on living resources have been developed. Beyond the quantified assessments of impacts on living systems, it also checked the feasibility of the impact assessment on human health and ecosystems quality and helps to identify the limits of such methods. Among the different impact categories, that of toxic substances on ecosystems occupies an important place. The extent of these impacts has...

Environmental impacts and benefits of information and communication technology infrastructure and services, using process and input-output life cycle assessment

Yves Loerincik
Sustainable development and the Information Society are two concepts that are not commonly associated. However, both could have a major impact on the other. Information and communication technologies (ICT) may have important negative impacts on the environment. At the same time, ICT can also bring improvements. To provide guidance on how ICT devices and applications can be oriented towards positive effects, new methodology and tools are needed to understand and assess these various effects. In...

Bases méthodologiques de la participation lors de projets ayant des impacts sur le paysage:cas d'application: la plaine du Rhône valaisanne

Vincent Luyet
Recently, participation emerged as an appropriate tool to enhance natural resource management. Despite official recognition, there is no consensus on the practical meaning of participation. In this work, we consider the participation as a process through which stakeholders influence and share control over development initiatives and the decision and resources affecting them. The aim of this research is to answer to the participation's issues : who should participate? when? and how? The main contribution of...

Modelling pesticides residues

Raphael Charles
This work is a contribution to the development of a specific method to assess the presence of residues in agricultural commodities. The following objectives are formulated: to identify and describe main processes in environment — plant exchanges, to build of a model to assess the residue concentration at harvest in agricultural commodities, to understand the functioning of the modelled system, to characterise pesticides used in field crops and identify optimisation potentials in phytosanitary measures. The...

Process-based, spatially-explicit modelling of riparian forest dynamics in Central Europe:tool for decision-making in river restoration

Christian Glenz
During the last decades public awareness of the limitations of traditional engineering practices and the imperative to conserve nature have led to changes in river management; including river restoration measures. The enlargement of the fluvial corridor is one of the often considered management measures. However, the high-pressure on land-use, the conflict of interests, as well as the uncertainty of vegetation and landscape development scenarios after restoration, can make their implementation difficult. In actual decision-making processes...

Prevention of forest fires in a changing climatic context in Ticino, southern Switzerland:a social and environmental approach

Michael Reinhard
Switzerland is not a place commonly associated with forest fires, unlike many areas of the nearby Mediterranean Basin. However, in this Alpine country, forest fires occur every year and destroy forests that fulfil various functions, the most socially and economically important of which is protection from natural hazards. Canton Ticino is the most affected by forest fires. The protective function is of vital importance for local communities. Most of Ticino's population lives in valley bottoms,...

Multimedia and food chain modelling of toxics for comparative risk and life cycle impact assessment

Ralph Rosenbaum
The overall goal of this dissertation is to contribute to the development of best available practice in environmental multimedia fate and multipathway exposure modelling for human health and ecosystem impacts, addressing several important aspects. Environmental multimedia models relate environmental emissions to impacts (or risk factors) combining multimedia fate and multipathway exposure estimates with effect assessment data. Many organic chemicals formed in combustion and released to air as well as organic chemicals released to air, water,...

Enhancing the application efficiency of life cycle assessment for industrial uses

Gerald Rebitzer
Sustainable development is an issue that is gaining more and more relevance in all areas of society, though specifically in industry. In order to move towards the goal of sustainability, life cycle thinking is an essential element. For the implementation of life cycle thinking in industry life cycle management (LCM) has been proposed as the general concept. However, the assessment of environmental impacts with the method of life cycle assessment, which is essentially the only...

Benthic macroinvertebrates and logging activities:a case study in a lowland tropical forest in East Kalimantan (Borneo, Indonesia)

Pascale Derleth
At the beginning of the 21 century, the conservation of biodiversity and the sustainable use of natural resources remains a matter of concern. Within this framework, the aim of this research was to study the effects of logging activities on ecological water quality indicators in a tropical forest. The study was undertaken at both local (species/habitat) and landscape (watershed) scales. The study took place on Borneo Island, in East Kalimantan province (Indonesia), in a state-owned...

Dead wood in managed forests: how much and how much is enough?:development of a snag-quantification method by remote sensing & GIS and snag targets based on Three-toed woodpeckers' habitat requirements

Rita Bütler Sauvain
The aims of this research were twofold: to develop an efficient method for the quantification of large spruce snags (standing dying and dead trees), and to establish snag target values for sustainable forest management. We answer the two basic questions: how much dead wood is currently available in managed forests? And how much dead wood is enough for biodiversity conservation? It is widely accepted that modern forest management has to be sustainable. One generally recognised...

Life cycle assessment of mobile telephone networks, with focus on the end-of-life phase

Wolfram Scharnhorst
Mobile communication, in particular mobile telephony, is a service whose nonexistence nowadays is unimaginable. The ongoing, ever increasing penetration of mobile communication equipment, presently intensified by the transition from second generation1 to third generation2 mobile telephone technology, raises the necessity for environmentally sound production, operation and End-of-Life3 treatment. In order to determine potentials to improve the overall environmental performance of large technical systems, such as mobile phone networks, Life Cycle Assessment4 is increasingly accepted as...

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