Empowering Expression for Users with Aphasia through Constrained Creativity

Creative activities allow people to express themselves in rich, nuanced ways. However, being creative does not always come easily. For example, people with speech and language impairments, such as aphasia, face challenges in creative activities that involve language. In this paper, we explore the concept of constrained creativity as a way of addressing this challenge and enabling creative writing. We report an app, MakeWrite, that supports the constrained creation of digital texts through automated redaction. The app was co-designed with and for people with aphasia and was subsequently explored in a workshop with a group of people with aphasia. Participants were not only successful in crafting novel language, but, importantly, self-reported that the app was crucial in enabling them to do so. We refect on the potential of technology-supported constrained creativity as a means of empowering expression amongst users with diverse needs

Crystallographic investigation into the self-assembly, guest binding, and flexibility of urea functionalised metal-organic frameworks

Introduction of hydrogen bond functionality into metal-organic frameworks can enhance guest binding and activation, but a combination of linker flexibility and interligand hydrogen bonding often results in the generation of unwanted structures where the functionality is masked. Herein, we describe the self-assembly of three materials, where Cd2+, Ca2+, and Zn2+ are linked by N,Nʹ-bis(4-carboxyphenyl)urea, and examine the effect of the urea units on structure formation, the generation of unusual secondary building units, structural flexibility, and guest binding. The flexibility of the Zn MOF is probed through single-crystal to single-crystal transformations upon exchange of DMF guests for CS2, showing that the lability of the [Zn4O(RCO2)6] cluster towards solvation enables the urea linkers to adopt distorted conformations as the MOF breathes, even facilitating rotation from the trans/trans to the trans/cis conformation without compromising the overall topology. The results have significant implications in the mechanistic understanding of the hydrolytic stability of MOFs, and in preparing heterogeneous organocatalysts

Consumer Choice and Beads in Fugitive Slave Villages in Nineteenth-Century Kenya

This study analyzes the consumption of European glass beads at two fugitive slave villages in nineteenth-century Kenya, Koromio and Makoroboi. The consumer choices of Koromio and Makoroboi residents reveal a strategic and symbolic material language. Specifically, the inter-household distribution of European glass beads reflects considerable variation in the performance of female identity. This distribution suggests varying norms of feminine adornment. Some of these norms likely originated in runaways’ natal communities; others may have developed during enslavement. The variability in adornment practices additionally points to women’s improvisation amid shifting gender relations in these nascent fugitive slave communities

Economic Organization and Cultural Cohesion in the Coastal Hinterland of 19th-Century Kenya: An Archaeology of Fugitive Slave Communities

This article presents a dissertation proposal for doctoral research scheduled to begin in September 2007. The project centers on the archaeological investigation of settlements founded in 19th-century Kenya by people escaping slavery. It considers the economic insularity and cultural heterogeneity of runaway slave groups relative to the coastal hinterland communities that neighbored them. In Swahili, fugitive slaves were known as watoro. This project investigates the creation of watoro communities through a dual focus on inter- and intra-group relationships. Firstly, it explores the relative economic integration of these nascent communities into regional networks. Secondly, the project investigates whether fugitive slaves developed homogenized sociocultural norms or, alternately, maintained long-term cultural heterogeneity. The above inquiries will be evaluated through an archaeological comparison of watoro settlements with villages of neighboring Mijikenda peoples in the coastal hinterland. Relying on Mijikenda settlements as alternate examples of 19th-century rural Eastern African life, the project will explore how the status of watoro as refugees from enslavement shaped the economic, social, and cultural organization of their villages. Indices targeted in this investigation include diet, trade, craft production, house style, and spatial organization of domestic activities

X-ray Emission Diagnostics from the M87 Jet

We use Chandra, HST and VLA observations of M87 to investigate the physics of X-ray emission from AGN jets. We find that X-ray hotspots in the M87 jet occur primarily in regions with hard optical-to-X-ray spectra and lower than average polarization. Particle injection appears to be required both continuously in the jet sheath as well as locally at X-ray hotspots.Comment: 4 pages, 2 figures, submitted to "The Physics of Relativistic Jets in the CHANDRA and XMM Era", Bologna 200

A review of corneal biomechanics: Mechanisms for measurement and the implications for refractive surgery

Detailed clinical assessment of corneal biomechanics has the potential to revolutionize the ophthalmic industry through enabling quicker and more proficient diagnosis of corneal disease, safer and more effective surgical treatments, and the provision of customized and optimized care. Despite these wide-ranging benefits, and an outstanding clinical need, the provision of technology capable of the assessment of corneal biomechanics in the clinic is still in its infancy. While laboratory-based technologies have progressed significantly over the past decade, there remain significant gaps in our knowledge regarding corneal biomechanics and how they relate to shape and function, and how they change in disease and after surgical intervention. Here, we discuss the importance, relevance, and challenges associated with the assessment of corneal biomechanics and review the techniques currently available and underdevelopment in both the laboratory and the clinic

X-ray Emission Processes in Extragalactic Jets, Lobes and Hot Spots

This paper is a brief review of the processes responsible for X-ray emission from radio jets, lobes and hot spots. Possible photons in inverse Compton scattering models include the radio synchrotron radiation itself (i.e. synchrotron self-Compton [SSC] emission), the cosmic microwave background (CMB), the galaxy starlight and radiation from the active nucleus. SSC emission has been detected from a number of hot spots. Scattering of the CMB is expected to dominate for jets (and possibly hot spots) undergoing bulk relativistic motion close to the direction towards the observer. Scattering of infrared radiation from the AGN should be observable from radio lobes, especially if they are close to the active nucleus. Synchrotron radiation is detected in some sources, most notably the jet of M87. I briefly discuss why different hot spots emit X-rays by different emission mechanisms and the nature of the synchrotron spectra.Comment: To be published in the proceedings of the Bologna conference ``The Physics of Relativistic Jets in the Chandra and XMM Era'', New Astronomy Revie