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Towards Net Zero Railways for Net Zero Transport
As a low-friction transportation system, rail has some strong environmental credentials. However, it also has a reliance on some carbon-intensive technologies and materials that make a transition to net zero problematic. This chapter examines the prospects for net zero railways through the lens of Holden et al.’s (2020) nine grand narratives for ...John Preston, Simon Blainey
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Transactions and Zero-Safe Nets
2001When employing Petri nets to model distributed systems, one must be aware that the basic activities of each component can vary in duration and can involve smaller internal activities, i.e., that transitions are conceptually refined into transactions. We present an approach to the modeling of transactions based on zero-safe nets. They extend ordinary pt
BRUNI, ROBERTO +1 more
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The Engineer, 2022
Royal Academy of Engineering President Professor Sir Jim McDonald spoke to Jon Excell about the vital role that a systems engineering mindset will play in the push for net zero
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Royal Academy of Engineering President Professor Sir Jim McDonald spoke to Jon Excell about the vital role that a systems engineering mindset will play in the push for net zero
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2020
Carbon neutrality; Climate neutrality; Decarbonization; Net zero carbon footprint; Net zero greenhouse gas (GHG) emission Net zero emission is a concept which is similar in theory to that of climate...
Saheed Matemilola, Hammed Adeniyi Salami
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Carbon neutrality; Climate neutrality; Decarbonization; Net zero carbon footprint; Net zero greenhouse gas (GHG) emission Net zero emission is a concept which is similar in theory to that of climate...
Saheed Matemilola, Hammed Adeniyi Salami
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Petri net processes for zero-safe nets
Fundam. Informaticae, 2005Summary: Composition of modules to larger units is a technique frequently used during the software development life cycle. It is mostly used in a ``bottom up'' fashion, suggested by the principles of object orientation, where the composition of simple objects to a complex one plays a central role.
Berndt Farwer, Michael Köhler 0001
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1982
In this note we discuss some aspects of nets (i. e. Petri-nets, place/transition nets, P/T-nets) augmented by inhibitor arcs. An inhibitor arc connects a transition t with a place p. For such a transition the firing rule is modified as follows. Transition t fires under the usual conventions, when p is empty, but is inhibited from firing, if p contains ...
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In this note we discuss some aspects of nets (i. e. Petri-nets, place/transition nets, P/T-nets) augmented by inhibitor arcs. An inhibitor arc connects a transition t with a place p. For such a transition the firing rule is modified as follows. Transition t fires under the usual conventions, when p is empty, but is inhibited from firing, if p contains ...
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The Path to Net Zero Emissions
SSRN Electronic JournalTo reach the goals of the Paris agreement, net carbon emissions must be reduced to zero by the second half of this century. To achieve this, some kind of carbon dioxide removal (CDR) is needed. The paper gives an analysis of the interaction between extraction of fossil energy resources and CDR.
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From Low- to Net-Zero Carbon Cities: The Next Global Agenda
Annual Review of Environment and Resources, 2021Karen C Seto +2 more
exaly