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- Bäckström, Christer, et al.
(author)
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From Macro Plans to Automata Plans
- 2012
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In: ECAI 2012. 20th European Conference on Artificial Intelligence, 27-31 2012, August, Montpellier, France. - 9781614990970 - 9781614990987 ; , s. 91-96
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Conference paper (peer-reviewed)abstract
- Macros have a long-standing role in planning as a tool for representing repeating subsequences of operators. Macros are useful both for guiding search towards a solution and for representing plans compactly. In this paper we introduce automata plans which consist of hierarchies of finite state automata. Automata plans can be viewed as an extension of macros that enables parametrization and branching. We provide several examples of the utility of automata plans, and prove that automata plans are strictly more expressive than macro plans. We also prove that automata plans admit polynomialtime sequential access of the operators in the underlying “flat” plan, and identify a subset of automata plans that admit polynomial-time random access. Finally, we compare automata plans with other representations allowing polynomial-time sequential access.
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| 2. |
- Bäckström, Christer, et al.
(author)
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Macros, Reactive Plans and Compact Representations
- 2012
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In: ECAI 2012. 20th European Conference on Artificial Intelligence 27-31 August 2+12, Montpellier, France. - 9781614990970 - 9781614990987 ; , s. 85-90
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Conference paper (peer-reviewed)abstract
- The use and study of compact representations of objects is widespread in computer science. AI planning can be viewed as the problem of finding a path in a graph that is implicitly described by a compact representation in a planning language. However, compact representations of the path itself (the plan) have not received much attention in the literature. Although both macro plans and reactive plans can be considered as such compact representations, little emphasis has been placed on this aspect in earlier work. There are also compact plan representations that are defined by their access properties, for instance, that they have efficient random access or efficient sequential access. We formally compare two such concepts with macro plans and reactive plans, viewed as compact representations, and provide a complete map of the relationships between them.
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| 3. |
- Haller, Henrik, et al.
(author)
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TURNING WASTE INTO A RESOURCE FOR REMEDIATION OF CONTAMINATED SOIL IN TROPICAL DEVELOPING COUNTRIES
- 2012
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In: PROCEEDINGS LINNAEUS ECO-TECH 2012. ; , s. 468-480
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Conference paper (other academic/artistic)abstract
- Contaminated soil from industrial or agricultural activities poses a health threat to animals and humans and can also have a detrimental effect on economic systems by making land unsuitable for agriculture and other economic purposes. This problem is of particular concern in tropical developing countries where agriculture is the economic base. Traditional methods for soil remediation are often expensive and energy consuming. In-situ bioremediation has been proposed as a cheaper alternative to conventional methods in areas where remediation would otherwise not be implemented. Despite encouraging results in the laboratory, the practice of in-situ bioremediation is limited, partially due to its inefficiency at low temperatures. The objective of this study is to provide an inventory of some waste products that potentially can be used as amendments for in-situ bioremediation in developing countries in tropical climate. Emphasis has been given to map efficient methods that are appropriate to economically marginalised people in such countries. Waste from livestock operations, crop residues and processing waste constitute the major waste flows in many developing countries. A number of organic by-products can potentially be used to stimulate microbial activity for bioremediation purposes. Three amendments; whey, pyroligneous acid and compost teas were selected to be studied in detail due to their liquid nature and documented capacity to stimulate microorganisms with capacity to degrade pollutants. Experiments are needed to determine their potential for in-situ bioremediation in developing countries in tropical climate.
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| 7. |
- Jonsson, Sigurdur, et al.
(author)
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Monte Carlo studies of protein aggregation
- 2012
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In: Physics Procedia. - : Elsevier BV. - 1875-3892. ; 34, s. 49-54
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Conference paper (peer-reviewed)abstract
- The disease-linked amyloid beta (A beta) and alpha-synuclein (alpha S) proteins are both fibril-forming and natively unfolded in free monomeric form. Here, we discuss two recent studies, where we used extensive implicit solvent all-atom Monte Carlo (MC) simulations to elucidate the conformational ensembles sampled by these proteins. For alpha S, we somewhat unexpectedly observed two distinct phases, separated by a clear free-energy barrier. The presence of the barrier makes alpha S, with 140 residues, a challenge to simulate. By using a two-step simulation procedure based on flat-histogram techniques, it was possible to alleviate this problem. The barrier may in part explain why fibril formation is much slower for alpha S than it is for A beta.
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| 8. |
- Landström, Anders, et al.
(author)
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Voronoi-based ISD and site density characteristics for mobile networks
- 2012
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In: 2012 IEEE 76th Vehicular Technology Conference. - Piscataway, NJ : IEEE Communications Society. - 9781467318815
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Conference paper (peer-reviewed)abstract
- Inter-Site Distance (ISD) is a common measure for characterizing the site density in a mobile network However, obtaining a good estimation of the ISD for a real world network is not trivial since the physical layout is usually quite more complex than a perfect theoretical hexagonal grid, due to a number of unavoidable factors such as site availability and traffic density. Voronoi diagrams have been suggested for approximating cells from network layouts, providing a method for partitioning the covered area into cells defined by the proximity to the given set of sites. This yields a framework for site coverage approximation based on the actual site distribution, rather than an underlying theoretical model.We present a novel measure, based on Voronoi diagrams, for characterizing the site density of a cellular network and provide a comparison to the more traditional ISD measure. This measure improves capacity assessments and modeling of real networks.
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| 9. |
- Lundberg, Lars, et al.
(author)
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Applying military medical training models on the training of civilian ambulance nurses
- 2012
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Conference paper (peer-reviewed)abstract
- Background: The pre-mission training of military medical personnel is based on simulation, using either moulage patients or full-scale simulation manikins. Furthermore, the training is preferably conducted in a realistic environment, including the logistic procedures required. Summary of work: The military approach to medical training has been considered interesting to apply on the postgraduate and continuing education for civilian ambulance nurses. One MD (professor) and one RN (associate professor) are now working part-time for the Armed Forces Centre for Defence Medicine and part-time for the University of Borås. A general aim is to improve the trauma education for civilian ambulance nurses, including prehospital procedures for command & control, and by introducing selected military techniques such as tourniquets and haemostatic agents to stop life-threatening bleedings also in civilian practice. Conclusions: We have a reason to believe that this recently initiated collaboration between military medicine and civilian prehospital medicine is mutually beneficial. The civilian Emergency Medical Services will become better trained and prepared, while the Armed Forces are likely to get a larger recruitment base of skilled medical personnel for future service in international missions. Take-home messages: Collaboration between organisations with similar interests, in this case the prehospital management of trauma victims, is likely to be mutually beneficial.
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| 10. |
- Yang, Jian, 1960, et al.
(author)
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Development of the cryogenic 2-14 GHz eleven feed system for VLBI2010
- 2012
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In: 6th European Conference on Antennas and Propagation, EuCAP 2012; Prague; Czech Republic; 26 March 2012 through 30 March 2012. - 9781457709180 ; , s. 621-625
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Conference paper (peer-reviewed)abstract
- We present an overview of the recent developments of a cryogenic 2-14 GHz feed system for the Very Long Baseline Interferometry 2010 (VLBL2010) project. The developments include a new balun feeding network, a new circular Eleven feed, system noise temperature modeling and testing, integration with different low noise amplifiers (LNAs), and cryostat design and integration.
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