155,357 research outputs found
"Det europeiska miraklet". Synen på västerlandets uppsving i historialäroböcker för gymnasiets A-kurs
No full textSammanfattning: David Kidner undersöker synen på västerlandets uppsving i historialäromedel för gymnasiets A-
kurs. Frågeställningarna var följande: Tar läroboken uttryckligen upp frågan om varför Europa kom att dominera
världen, och i sådana fall, vilket eller vilka perspektiv väljer man att lyfta fram? och Vilken ide förmedlar läroboken
som helhet till läsaren om varför Europa kom att dominera världen?
Resultatet visar att frågan om västerlandets uppsving inte diskuteras i tillräckligt stor utsträckning för att uppfylla
kursplanens mål. Vidare förmedlas en eurocentrisk bild av västerlandets uppsving vilket resulterar i en
förklaringsmodell som framställer européer som överlägsna andra. Resultatet stämmer överens med med tidigare
forskning om synen på väst/europas förhållande till andra kulturer i läromedel. Kidner menar att detta är problematiskt
därför att det framställer européer och Europa som bättre än andra. Detta är potentiellt skadligt för skolelever och
samhällets syn på "de andra" och sig själva. Kidner förespråkar att de grundläggande orsakerna om västerlandets
uppsving tydliggörs och nyanseras i läroböckerna så att elevers uppfattning om sig själva och andra inte snedvrids
A comparison of theories of the acoustics of porous materials
No full textThis article reviews the research on acoustic waves in porous media. Particular emphasis is placed on the relationship between the full Biot-Allard (J. Allard, Propagation of sound in porous media. Elsevier Applied Science, 1993.) model and the simpler approximations presented by Zwikker and Kosten(C. Zwikker and C.W. Kosten, Sound Absorbing Materials. Elsevier Publishing Inc, New York, 1949.), Morse and Ingard (P. M. Morse and K. U. Ingard, Theoretical Acoustics. Princeton University Press, Princeton, New Jersey, 1986.), and others. A comparison of several models used to predict the absorption characteristics of porous materials is presented.Mike R.F. Kidner and Colin H. Hanse
Searching for Pigeons in the Belfry: The Inquest, the Abolition of the Deodand and the Rise of the Family
No full textThis article explores the abolition in 1846 of the deodand – the object or animal declared responsible for death by an inquest jury – and its relationship with the family of the deceased. Drawing on the work of Jacques Donzelot, it argues that the deodand brought contingency into the heart of law, and that its replacement with a legal right to compensation for dependents was a move to rationalize the investigation of death. This rationalization had consequences; limiting the place of the unruly community, centering and regulated the family, and disconnecting the inquest from the material of death
Active control of sound using a parametric array
No full texthttp://www.mecheng.adelaide.edu.au/anvc/abstract.php?abstract=37
Midterm Outcomes of the Modified Kidner Procedure for Accessory Navicular Syndrome in Athletes vs Nonathletes
No full textBackground: An accessory navicular is a supernumerary ossicle located medial to the navicular bone, typically within the substance or insertion of the posterior tibial tendon, and can be a source of pain and dysfunction in active individuals. Methods: This was a retrospective comparative study evaluating the outcomes of the modified Kidner procedure in athletes (ballet, basketball, volleyball, running, football, soccer, etc) and nonathletes. Our study included 42 consecutive feet that were operatively managed with the modified Kidner procedure for a symptomatic accessory navicular between the years 2014 and 2023. Patients who underwent any other procedure in addition to the modified Kidner procedure were excluded from the study. The objective of this study is to determine the outcomes of the modified Kidner procedure for an accessory navicular in the athletic population compared to the nonathletic or general population. Results: Athletes had no difference in postoperative Foot and Ankle Ability Measure (FAAM) activities of daily living (ADL) and visual analog scale (VAS) scores compared with nonathletes. Interestingly, comparison of single-sport to multisport athletes revealed that single-sport athletes presented with worse preoperative VAS and FAAM scores. However, there was no significant difference in postoperative patient-reported outcomes between single-sport and multisport athletes. Conclusion: Our results suggest that although single-sport athletes may present with more severe preoperative symptoms, they experience comparable improvement following operative management relative to nonathletes or multisport athletes Level of Evidence: Level III, retrospective comparative study
A simple leaf with compound gene expression: indeterminate leaves co-express ARP and KNOX genes
No full textAre changes at ARP and KNOX genes responsible for the evolution of leaf form in Begonia section Gireoudia?
No full textLeaf primordia initiation takes place at the flanks of SAM and then passes
through common developmental stages. Very different final leaf shapes and sizes
result from varying the timing and further patterning events within these
developmental stages. Similar final leaf shapes may also result from very distinct
early events. Begonia section Gireoudia is a recently radiated group of species with
highly divergent leaf forms. I have used a classical genetic approach and candidate
gene approach to explain the evolution of leaf form in this genus. These results
suggest that convergent evolution of peltate leaves may be through changes at
different loci. Key developmental regulators KNOX and ARP genes are reported to be
involved in the evolution of leaf form in different species. I have shown that in at
least one species ARP is linked to the evolution of peltate leaf form. In a second
species there is no link between STM-like KNOX genes and leaf dissection. Estimates
of the rate of evolution of ARP CDS showed that different domains of the genes are
under different selection pressures. Myb domain2 of ARP genes is under positive
selection and variable between two copies of ARP genes in Begonia. Results of
complementation tests with Begonia ARP genes in Arabidopsis show that ARPs from
Begonia are functionally equivalent to Arabidopsis AS1 genes and one of the two
ARP genes in Begonia may be a dominant negative. Expression analysis based on
insitu hybridization in compound, peltate and simple leaved Begonias is described.
There is no variation in expression patterns between peltate, non peltate or compound
leaved Begonia species for BARP1 and KNB1 genes
Striation processing of spectrogram data
No full textThe determination of seabed properties and their incorporation in sound propagation models for estimating the effectiveness of sonar and underwater communications is generally required in shallow water regions in the vicinity of commonly used shipping and fishing routes. It has been suggested by others that the extraction of acoustic data from interference patterns observable in ambient noise spectrograms can be used as an effective means of determining seafloor properties in these situations. Within this paper, the problem of obtaining information from a frequency vs. range spectrogram and relating this to the governing modal model is discussed. An existing method for estimating modal group and phase velocities (and hence seabed properties) from spectrogram information, based upon a dual mode analysis, is critically reviewed and the need for a more complete description of the modal model is outlined.Laura A. Brooks, M. R. F. Kidner, Anthony C. Zander, Colin H. Hansen, Z. Yong Zhanghttp://www.mecheng.adelaide.edu.au/anvc/abstract.php?abstract=380http://icsv13.tuwien.ac.at
O. A. C. Review Volume XLVI Issue 5, February 1934
No full textThe focus of this issue is the preparation for College Royal and recognizing its tenth anniversary. This month's agricultural article is a report from the Dominion Parasite Laboratory on the biological control of pests. Other articles provide an account of the activities of a stage manager and the development of the field of home economics at Macdonald College in Quebec. Campus news addresses the success of the 1934 Conversazione, the commemorating of the sixtieth anniversary of the founding of O. A. C., the attendance at the Canadian Author Lecture, and the successful productions of "The Apple Cart" and "Iolanthe". The Macdonald Institute column comments on the Conversat and women's athletics activities in basketball and the rifle club. The Alumni Record supplies alumni updates.EditorialTen Years of the RoyalRamblings on the RoyalBlame it on the stage managerBiological control of insect pests in CanadaNot for girls onlyCollege lifeLiterary sectionO. A. C. sportsfolioAlumni recordMacdonald newsLetters to the editoradvertisin
Theoretical design parameters for a quasi-zero stiffness magnetic spring for vibration isolation
No full textThis paper presents an analysis of a magnetic levitation system for vibration isolation. A non-dimensional analysis of the magnetic support is considered and it is shown analytically that for cubical magnets the ratio of force to displacement is directly proportional to face area. The arrangement of magnets examined uses a negative stiffness element to reduce the natural frequency of the suspension. Design criteria are imposed on the system to satisfy mass loading, bandwidth of the required isolation, expected magnitude of the vibration disturbance and required robustness of the system. The vibration response of a system designed to satisfy these requirements is compared to an equivalent linear system and is shown to become increasingly nonlinear as the system moves towards instability. © 2009 Elsevier Ltd.Will S. Robertson, M. R. F. Kidner, Ben S. Cazzolato, Anthony C. Zande
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