| 1. |
- Alvarez-Rodriguez, Manuel, et al.
(author)
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Quality of frozen-thawed semen in brown bear is not affected by timing of glycerol addition.
- 2011
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In: Theriogenology. - : Elsevier. - 0093-691X .- 1879-3231. ; 75:8, s. 1561-1565
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Journal article (peer-reviewed)abstract
- We have tested several freezing protocols for brown bear semen, modifying the time when glycerol was added (before and after cooling to 5 °C). No differences were found among protocols, indicating a good tolerance of brown bear semen to glycerol. This finding indicates that freezing protocols for brown bear semen could be modified to fit practical solutions which would facilitate preparation of the seminal samples in the field with the addition of glycerol at ambient temperature.
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| 2. |
- Beets-Tan, Regina G. H., et al.
(author)
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Magnetic resonance imaging for the clinical management of rectal cancer patients : recommendations from the 2012 European Society of Gastrointestinal and Abdominal Radiology (ESGAR) consensus meeting
- 2013
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In: European Radiology. - : Springer Science and Business Media LLC. - 0938-7994 .- 1432-1084. ; 23:9, s. 2522-2531
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Journal article (peer-reviewed)abstract
- To develop guidelines describing a standardised approach regarding the acquisition, interpretation and reporting of magnetic resonance imaging (MRI) for clinical staging and restaging of rectal cancer. A consensus meeting of 14 abdominal imaging experts from the European Society of Gastrointestinal and Abdominal Radiology (ESGAR) was conducted following the RAND-UCLA Appropriateness Method. Two independent (non-voting) chairs facilitated the meeting. Two hundred and thirty-six items were scored by participants for appropriateness and classified subsequently as appropriate or inappropriate (defined by a parts per thousand yen 80 % consensus) or uncertain (defined by < 80 % consensus). Items not reaching 80 % consensus were noted. Consensus was reached for 88 % of items: recommendations regarding hardware, patient preparation, imaging sequences, angulation, criteria for MRI assessment and MRI reporting were constructed from these. These expert consensus recommendations can be used as clinical guidelines for primary staging and restaging of rectal cancer using MRI. These guidelines recommend standardised imaging for staging and restaging of rectal cancer. The guidelines were constructed through consensus amongst 14 abdominal imaging experts. Consensus was reached by in 88 % of 236 items discussed.
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| 3. |
- Ribeiro, Luis, et al.
(author)
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Diagnosis in Networks of Mechatronic Agents : Validation of a Fault Propagation Model and Performance Assessment
- 2011
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In: Technological Innovation for Sustainability. - Berlin, Heidelberg : Springer Berlin/Heidelberg. - 9783642191695 - 9783642191701 ; , s. 205-214
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Book chapter (peer-reviewed)abstract
- Recent shop floor paradigms and approaches increasingly advocate the use of distributed systems and architectures. Plug-ability, Fault Tolerance, Robustness and Preparedness are characteristics believed to emerge by instantiation of these fundamentally new design approaches. However these features, when effectively present, often come at the cost of a greater system complexity. Enclosed in this complexity increase is a plethora on unforeseen interactions between the entities (modules) that compose the system. The purpose of this paper is, in this context, twofold: to validate a fault propagation model in random networks (that simulate the connectivity of modular shop floor systems) and assess the performance of two diagnostic approaches to expose the impact of relying in local or global information.
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| 4. |
- Ribeiro, Luis, et al.
(author)
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Exploring the network dimension of diagnosis in Evolvable Production Systems
- 2010
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In: Emerging Technologies and Factory Automation (ETFA), 2010 IEEE Conference on Date 13-16 Sept. 2010. - : IEEE. - 9781424468485 ; , s. 1-6
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Conference paper (peer-reviewed)abstract
- Modern Production Paradigms, supported by state-of-art developments in IT, present major opportunities for the effective implementation of sustainable shop floors. With an increased focus in seamless system reconfiguration most proposals advocate the use of modular and distributed architectures that are dynamic compositions (adaptable and evolvable structures) of cooperating self-contained entities that interact using complex communication patterns with enhanced semantics. These design principles introduce significant diagnostic challenges. The distributed and contained nature of the information renders collective fault events harder to track. Furthermore, current approaches that are adjusted to a more conservative logic-based control, do not provide an adequate response to this problem. This paper proposes an approach to capture the network dynamics of faults in the emergent domain of Evolvable Production Systems (EPS) which implements and extends the before-mentioned characteristics.
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| 5. |
- Ribeiro, Luis, et al.
(author)
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Global Vs Local : A Comparison of Two Approaches to Perform Diagnosis in Networks of Mechatronic Agents
- 2010
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In: Self-Adaptive and Self-Organizing Systems (SASO), 2010 4th IEEE International Conference on. - : IEEE. - 9781424485376 - 9780769542324 ; , s. 84-93
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Conference paper (peer-reviewed)abstract
- Natural systems often exhibit, at a macro level, a tendency to order that emerges from simple and local interactions between the system components. This idea that the whole can denote a consistent behavior that is more than the sum of individual components has inspired the design and development of many artificial systems. Recently, with the pervasiveness of IT in the automation domain the application of such principles became interesting as a mean to developed seamlessly plug gable, robust and fault-tolerant mechatronic systems. These concepts, however, have been mainly applied from a control perspective. This paper argues the regulatory significance of diagnosis in such complex systems and discusses two strategies (fully centralized with global information and fully decentralized with local information) to perform a diagnostic analysis that explores the network dimension of future mechatronic systems.
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