| 1. |
- Coyne-Jensen, Courtney
(author)
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Meeting Place through Embodiment and Enaction
- 2017
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Conference paper (other academic/artistic)abstract
- Broadly speaking, this presentation addresses the need for more rigorously integrating embodied pedagogies in education. Specifically, it asks how might foundation studies undertaken in the field encourage architecture and design students to more meaningfully ground their lines of inquiry, their works, and themselves in corporeal presence, attunement, and topos. Furthermore, this talk elucidates a series of place‐oriented practices created to help students better identify, analyze and understand the reciprocal relationships between human livability and the built environment; including the embedded interactions of their own gesturing bodies and the flesh of the world. This talk argues that important abilities such as attunement and presencing do not occur in an undifferentiated everywhere or nowhere. They occur in the body, and in and through place. It is precisely in this intermeshed state that educators ought develop and situate more pedagogies.
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| 2. |
- Escamez, Sacha, 1987-
(author)
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Xylem cells cooperate in the control of lignification and cell death during plant vascular development
- 2016
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Doctoral thesis (other academic/artistic)abstract
- The evolutionary success of land plants was fostered by the acquisition of the xylem vascular tissue which conducts water and minerals upwards from the roots. The xylem tissue of flowering plants is composed of three main types of cells: the sap-conducting tracheary elements (TE), the fibres which provide mechanical support and the parenchyma cells which provide metabolic support to the tissue. Both the TEs and the fibres deposit thick polysaccharidic secondary cell walls (SCWs), reinforced by a rigid phenolic polymer called lignin. The cell walls of TEs form efficient water conducting hollow tubes after the TEs have undergone programmed cell death (PCD) and complete protoplast degradation as a part of their differentiation. The work presented in this thesis studied the regulation of TE PCD by characterizing the function of the candidate PCD regulator METACASPASE 9 (MC9) in Arabidopsis thaliana xylogenic cell suspensions. These cell suspensions can be externally induced to differentiate into a mix of TEs and parenchymatic non-TE cells, thus representing an ideal system to study the cellular processes of TE PCD. In this system, TEs with reduced expression of MC9 were shown to have increased levels of autophagy and to trigger the ectopic death of the non-TE cells. The viability of the non-TE cells could be restored by down-regulating autophagy specifically in the TEs with reduced MC9 expression. Therefore, this work showed that MC9 must tightly regulate the level of autophagy during TE PCD in order to prevent the TEs from becoming harmful to the non-TEs. Hence, this work demonstrated the existence of a cellular cooperation between the TEs and the surrounding parenchymatic cells during TE PCD. The potential cooperation between the TEs and the neighbouring parenchyma during the biosynthesis of lignin was also investigated. The cupin domain containing protein PIRIN2 was found to regulate TE lignification in a non-cell autonomous manner in Arabidopsis thaliana. More precisely, PIRIN2 was shown to function as an antagonist of positive transcriptional regulators of lignin biosynthetic genes in xylem parenchyma cells. Part of the transcriptional regulation by PIRIN2 involves chromatin modifications, which represent a new type of regulation of lignin biosynthesis. Because xylem constitutes the wood in tree species, this newly discovered regulation of non-cell autonomous lignification represents a potential target to modify lignin biosynthesis in order to overcome the recalcitrance of the woody biomass for the production of biofuels.
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| 3. |
- Rudberg, Martin, et al.
(author)
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Exploring Logistics Strategy in Construction
- 2019
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In: ADVANCES IN PRODUCTION MANAGEMENT SYSTEMS: PRODUCTION MANAGEMENT FOR THE FACTORY OF THE FUTURE, PT I. - Cham : SPRINGER INTERNATIONAL PUBLISHING AG. - 9783030300005 - 9783030299996 ; , s. 529-536
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Conference paper (peer-reviewed)abstract
- The purpose of this research is to explore logistics strategies in construction. There are very few studies on logistics and SCM practices in construction, especially when it comes to the long-term strategic work of construction companies. Therefore, this research takes a contractors perspective and addresses logistics strategy based on the empirical examination of two case companies in the construction industry. The main focus is the contents of the strategy and possible components of the logistics strategy are identified through a literature review. Also the process of the strategy is treated through exploring logistics strategy in two case companies exemplifying two strategic approaches to construction logistics. However, the approaches differ, implying a spectrum that at one end responds in a standardized manner to a pre-determined design solution and at the other reveals a re-configurable modular approach. The main contributions of this study lie in exploring logistics strategy in construction and providing examples of how construction companies work with logistics strategies, adding empirical knowledge to the field of construction logistics.
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| 4. |
- Scholte, R., et al.
(author)
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Experimental application of high precision k-space filters and stopping rules for fully automated near-field acoustical holography
- 2008
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In: International Journal of Acoustics and Vibration. - 1027-5851 .- 2415-1408. ; 13:4, s. 157-164
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Journal article (peer-reviewed)abstract
- In general, inverse acoustics problems are ill-posed. Without proper regularization action taken noisy measurements result in an increasingly disturbed solution of the inverse acoustics wave equation as the distance from the measurement plane to the desired source grows. Two distinctive steps take place in the regularization process for planar near-field acoustical holography (PNAH): first, a low-pass filter function is defined and secondly a stopping rule is applied to determine the parameter settings of the filter. In acoustical imaging practice, it turns out to be very hard to determine the right filter for a certain case, ideally by means of an automatic search for the (near-) optimal parameters. This paper presents the practical application of a novel automated method that combines fitted filters for a broad number of possible experimental sources combined with highly efficient stopping rules by taking advantage of k-space. Also, a number of well-known and newly developed filter functions and stopping rules are discussed and compared with one another. Results based on actual measurements demonstrate the effectiveness, applicability, and precision of the fully implemented and automated regularization process for PNAH. Practical results even show acoustic source visualization below one millimeter primarily by successful application of k-space regularization. Implementations include modifications of Tikhonov, exponential and truncation low-pass filters, L-curve Generalised Cross-Validation (GCV) and the novel Cut-Off and Slope (COS) parameter selection methods for PNAH COS iteration in combination with either a modified exponential or Tikhonov low-pass filter results in an automated selection of the regularization parameters and eventually a fully automated PNAH system.
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