Global civil aviation black carbon emissions.

Aircraft black carbon (BC) emissions contribute to climate forcing, but few estimates of BC emitted by aircraft at cruise exist. For the majority of aircraft engines the only BC-related measurement available is smoke number (SN)-a filter based optical method designed to measure near-ground plume visibility, not mass. While the first order approximation (FOA3) technique has been developed to estimate BC mass emissions normalized by fuel burn [EI(BC)] from SN, it is shown that it underestimates EI(BC) by >90% in 35% of directly measured cases (R(2) = -0.10). As there are no plans to measure BC emissions from all existing certified engines-which will be in service for several decades-it is necessary to estimate EI(BC) for existing aircraft on the ground and at cruise. An alternative method, called FOX, that is independent of the SN is developed to estimate BC emissions. Estimates of EI(BC) at ground level are significantly improved (R(2) = 0.68), whereas estimates at cruise are within 30% of measurements. Implementing this approach for global civil aviation estimated aircraft BC emissions are revised upward by a factor of ~3. Direct radiative forcing (RF) due to aviation BC emissions is estimated to be ~9.5 mW/m(2), equivalent to ~1/3 of the current RF due to aviation CO2 emissions.

A numerical study into the effects of Bio-synthetic Paraffinic Kerosine blends with Jet-A fuel for civil aircraft engine

Growing concerns regarding fluctuating fuel costs and pollution targets for gas emissions, have led the aviation industry to seek alternative technologies to reduce its dependency on crude oil, and its net emissions. Recently blends of bio-fuel with kerosine, have become an alternative solution as they offer "greener" aircraft and reduce demand on crude oil. Interestingly, this technique is able to be implemented in current aircraft as it does not require any modification to the engine. Therefore, the present study investigates the effect of blends of bio-synthetic paraffinic kerosine with Jet-A in a civil aircraft engine, focusing on its performance and exhaust emissions. Two bio-fuels are considered: Jatropha Bio-synthetic Paraffinic Kerosine (JSPK) and Camelina Bio-synthetic Paraffinic Kerosine (CSPK); there are evaluated as pure fuels, and as 10% and 50% blend with Jet-A. Results obtained show improvement in thrust, fuel flow and SFC as composition of bio-fuel in the blend increases. At design point condition, results on engine emissions show reduction in NO x, and CO, but increases of CO is observed at fixed fuel condition, as the composition of bio-fuel in the mixture increases. Copyright © 2012 by ASME.

Risk-based approaches to sustainability in civil engineering

Infrastructure project sustainability assessment typically entails the use of specialised assessment tools to measure and rate project performance against a set of criteria. This paper looks beyond the prevailing approaches to sustainability assessments and explores sustainability principles in terms of project risks and opportunities. Taking a risk management approach to applying sustainability concepts to projects has the potential to reconceptualise decision structures for sustainability from bespoke assessments to becoming a standard part of the project decisionmaking process. By integrating issues of sustainability into project risk management for project planning, design and construction, sustainability is considered within a more traditional business and engineering language. Currently, there is no widely practised approach for objectively considering the environmental and social context of projects alongside the more traditional project risk assessments of time, cost and quality. A risk-based approach would not solve all the issues associated with existing sustainability assessments but it would place sustainability concerns alongside other key risks and opportunities, integrating sustainability with other project decisions.

Who has the Right to Govern Online Activity? A Criminal and Civil Point of View

Kohl, U. (2004). Who has the right to govern online activity? A criminal and civil point of view. International Review of Law, Computers & Technology 18 (3), 387-410 RAE2008

Strat?gie et id?ologie: le haut commandement fran?ais et la guerre civile espagnole?

Jackson, Peter, 'Strat?gie et id?ologie: le haut commandement fran?ais et la guerre civile espagnole ', Guerres Mondiales et Conflits Contemporains - Revue Trimestrielle d'Histoire (2001) 199 pp.111-133 RAE2008

Toward a European Army: A Military Power in the Making?

Shepherd, Alistair, and T. C. Salmon, Toward a European Army: A Military Power in the Making? (Boulder, CO: Lynne Rienner, 2003), pp.x+237 RAE2008

Land Use and Military Supply in the Highland Zone of Roman Britain

Davies, Jeffrey. 'Land Use and Military Supply in the Highland Zone of Roman Britain', In: Artefacts and Archaeology. Aspects of the Celtic and Roman World (University of Wales Press, 2002), pp.44-61 RAE2008

Prawa człowieka w kontekstach kulturowych

The power of human rights idea and its expansion are connected with the experience of so far unprecedented pain and cruelty caused by man to man during the Second World War. Doctrine of legal positivism strenghtened totalitarian systems. One of the essential goals that were set by totalitarian systems was ethnic cleansing within both one’s and subjugated communities. To achieve this goal, concentration camps were established. This Second World War’s events gave raise to a question: does the common morality of the whole mankind exist? The Nuremberg Trials based on conviction that this common morality of the whole mankind exists. In this lawsuits Nazis were on trials for mass murder and crimes against humanity despite the fact that this crimes did not exist as a criminal offences in international law of that time. Lawyers of Nazis argued that their clients should not have been on trials for crimes against humanity because the rule “lex retro non agit” (“the law does not operate retroactively”) should have been in force. International Military Tribunal dismissed this argument – it was stated they tried Nazis are responsible for acts resulting from breach of the natural law. Therefore, the primacy of natural law over civil law (was approved and they admitted that morality and law are essential components of international reality. Since The Nuremberg Trials, the process of making international relations more ethical proceeded consistently through positivisationi.e. introducing human rights ideas to civil law (this issue is included in the Part I of the book: Positivisation of human rights idea). In this way, contemporary human rights as civil law arose, established on the basis of international agreement. Using them in order to legitimize and validate humanitarian interventions undertaken in various parts of the world became the common standard. However, positivisation of human rights idea did not mean that one common paradigm was accepted. Many interpretation of human rights arose and many new human rights formed in concrete cultures. It gives raise to a question about validity of interventions especially in the context of cultural differences in various parts of the world that influence perception, understanding and interpretation of human rights (this issues are discussed in Part II of this book). At present human rights are not only relativized to cultural contexts but undergo semantic changes as a result of globalisation process as well (Part II of the book: Human rights idea vs globalisation). Moreover, the propositions of establishing institutions and global structures that would strengthen human rights idea appear, interalia new propositions of citizenship defining (ujmowanie jako definiowanie)in response to a decreasing role and significance of nation states in the age of globalization. The idea of human rights dominated present-day law, culture and daily life both in local and global dimension. Human rights issue became essential for philosophy, especially political philosophy.

La guarda y custodia compartida de los hijos en el régimen del Código Civil

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