16,053 research outputs found

    Cataloguing the ‘oriental’ in MoDA’s Silver Studio Collection

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    This is a Culture & New Museum School Advanced Programme and University of Leicester’s School of Museum Studies project. New Museum School Advanced Programme aims to open up who makes and enjoys arts and heritage by allowing professionals to continue full-time employment while attending distance learning. The course has a flexible and modular structure leading to post-graduate qualifications from PGDip to MA level. The accessible recruitment process for applicants with a wide-range of experiences and budget aims to diversify the Arts and Heritage workforce. In this project, Kirsty Kerr looked at the use of the word ‘oriental’ as a descriptive term in the Museum of Domestic Design & Architecture (MoDA)’s Silver Studio Collection. It was used by studio designers to describe a loosely-defined set of visual characteristics that gestured vaguely towards ‘Eastern’ motifs, either in their own work or in visual reference material. Subsequent cataloguers of these items have continued to use the term ‘oriental’ uncritically. The project was not simply about reporting the terms used by the Silver Studio, but how MoDA describe the collection now - primarily in their internal catalogue, but also considering its impact on wider practice. It aimed to build on work going on elsewhere in the sector, which draws attention to the need to tackle in-built assumptions inherent within museum databases. Reflecting on current discourse, the report explores how MoDA might unpack the word today to add more specific or suitable terms to the catalogue, in order to be both more appropriate and more useful to all users in finding relevant items. The project spanned eight weeks, with one dedicated work day per week. The first three were onsite and to familiarise with MoDA’s collection stores and database, and the items therein. The remaining weeks took place remotely and involved collating research, grounding it within relevant theory and critically reflecting on museum practice

    Embedding impedance approximations in the analysis of SIS mixers

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    Future millimeter-wave radio astronomy instruments will use arrays of many SIS receivers, either as focal plane arrays on individual radio telescopes, or as individual receivers on the many antennas of radio interferometers. Such applications will require broadband integrated mixers without mechanical tuners. To produce such mixers, it will be necessary to improve present mixer design techniques, most of which use the three-frequency approximation to Tucker's quantum mixer theory. This paper examines the adequacy of three approximations to Tucker's theory: (1) the usual three-frequency approximation which assumes a sinusoidal LO voltage at the junction, and a short-circuit at all frequencies above the upper sideband; (2) a five-frequency approximation which allows two LO voltage harmonics and five small-signal sidebands; and (3) a quasi five-frequency approximation in which five small-signal sidebands are allowed, but the LO voltage is assumed sinusoidal. These are compared with a full harmonic-Newton solution of Tucker's equations, including eight LO harmonics and their corresponding sidebands, for realistic SIS mixer circuits. It is shown that the accuracy of the three approximations depends strongly on the value of omega R(sub N)C for the SIS junctions used. For large omega R(sub N)C, all three approximations approach the eight-harmonic solution. For omega R(sub N)C values in the range 0.5 to 10, the range of most practical interest, the quasi five-frequency approximation is a considerable improvement over the three-frequency approximation, and should be suitable for much design work. For the realistic SIS mixers considered here, the five-frequency approximation gives results very close to those of the eight-harmonic solution. Use of these approximations, where appropriate, considerably reduces the computational effort needed to analyze an SIS mixer, and allows the design and optimization of mixers using a personal computer

    The sensitivity of saccharomyces mutants to palmitoleic acid may provide a means to study the controls of membrane fluidity in eukaryotes

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    The mechanisms which control the fluidity of eukaryotic membranes are unknown. We have identified S. cerevisiae deletion strains whose growth is impaired by palmitoleic (PO; C16:1) but not oleic (C18:1) acid. PO-sensitivity is suppressed by oleate thus perhaps identifying a signaling pathway that controls the ratio of these fatty acids in membrane phospholipid. Growth of these mutants is also inhibited by a known fluidizer, benzyl alcohol, thus indicating that PO has a fluidizing effect. Removal of Pkc1, known to play a key role in cell wall integrity control, leads to acute PO-sensitivity. Removal of Bck1, Mkk1, Mkk2, Slt2, or Swi6 downstream components of the cell wall integrity pathway, cause modest POsensitivity. Suppression by 1M sorbitol of the PO-sensitivity of these four mutants implies that PO/oleate ratio influences the cell wall. Acute PO-sensitivity of the pkc1Δ strain, even in the presence of 1M sorbitol, suggests the cell wall to be more severely compromised by PO addition to this strain. Alternatively, the failure to control the PO/oleate ratio could have an additional effect on the pkc1 strain, perhaps by disabling a 2nd pathway downstream of Pkc1 thus allowing PO addition to cause excess membrane fluidity. We are attempting to distinguish these two models by a variety of genetic, biochemical, and physical methods. Most notably, the effect of PO on the fluidity of the plasma membrane is being examined by measuring the depolarization of laurdan fluorescence

    Condominium--Statutory Implementation

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    FUNDAMENTAL AND INDUCED BIASES IN TECHNOLOGICAL CHANGE IN CENTRAL CANADIAN AGRICULTURE

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    A new procedure is developed to estimate innovation possibility frontiers and test for biases in technological change. Using data on four inputs (land, machinery, chemicals and labour) from central Canada (Ontario and Quebec) over the period 1926-1985, we find that the innovations possibilities frontier shifts neutrally over time. This is consistent with Ahmad's model of induced innovations, but is not consistent with de Janvry's application of Ahmad's model to the historical development of Argentine agriculture. Agricultural research in Canada has been conducted with the objective of developing cost minimizing technologies. Empirical support was found for this notion in the development of the innovation possibilities frontier.Innovation possibility frontier, technological change, Research and Development/Tech Change/Emerging Technologies,

    Condominium--Statutory Implementation

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    Mortuary Variability in the Final Palatial Period on Crete: Investigating Regionality, Status, and “Mycenaean” Identity

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    The Late Bronze Age on the island of Crete saw a period of strong administrative and religious control by the palace at Knossos, which also controlled a vast trade network with the rest of the eastern Mediterranean. After the collapse of the palace of Knossos, the Final Palatial period (1490 - 1320 BCE), was a time of sociopolitical transition and change, witnessing an explosion in number and variety of mortuary practices used, even within the same cemetery. In this thesis I analyze Final Palatial burial practices in a more systematic method than has been previously attempted, in order to gain a better understanding of how the Minoans chose to use the mortuary sphere as a platform for constructing and negotiating their social and political identities in the dynamic socio-political climate of the Final Palatial period

    Detection of radio emission from the gamma-ray pulsar J1732-3131 at 327 MHz

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    Although originally discovered as a radio-quiet gamma-ray pulsar, J1732-3131 has exhibited intriguing detections at decameter wavelengths. We report an extensive follow-up of the pulsar at 327 MHz with the Ooty radio telescope. Using the previously observed radio characteristics, and with an effective integration time of 60 hrs, we present a detection of the pulsar at a confidence level of 99.82%. The 327 MHz mean flux density is estimated to be 0.5-0.8 mJy, which establishes the pulsar to be a steep spectrum source and one of the least-luminous pulsars known to date. We also phase-aligned the radio and gamma-ray profiles of the pulsar, and measured the phase-offset between the main peaks in the two profiles to be 0.24±\pm0.06. We discuss the observed phase-offset in the context of various trends exhibited by the radio-loud gamma-ray pulsar population, and suggest that the gamma-ray emission from J1732-3131 is best explained by outer magnetosphere models. Details of our analysis leading to the pulsar detection, and measurements of various parameters and their implications relevant to the pulsar's emission mechanism are presented.Comment: 8 pages, 6 figures; Accepted for publication in MNRA
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