6,804 research outputs found
Population ageing and immigration policy
No full textIn its simplest interpretation, population ageing is the increase in the average or median age of a population. It is the process by which there is a redistribution of relative population shares away from the younger to the older age groups
Partial translation algebras for trees
No full textIn [1] we introduced the notion of a partial translation C*-algebra for a discrete metric space. Here we demonstrate that several important classical C*-algebras and extensions arise naturally by considering partial translation algebras associated with subspaces of trees. <br/
The local spectrum of the Dirac operator for the universal cover of SL_2(R)
No full textUsing representation theory, we compute the spectrum of the Dirac operator on the universal covering group of SL2(R)SL2(R), exhibiting it as the generator of KK1(C,A)KK1(C,A), where AA is the reduced C?C?-algebra of the group. This yields a new and direct computation of the K -theory of AA. A fundamental role is played by the limit-of-discrete-series representation, which is the frontier between the discrete and the principal series of the group. We provide a detailed analysis of the localised spectra of the Dirac operator and compute the Dirac cohomology
Stambaugh correlations, monkey econometricians and redundant predictors
No full textWe consider inference in a widely used predictive model in empirical finance. "Stambaugh Bias" arises when innovations to the predictor variable are correlated with those in the predictive regression. We show that high values of the "Stambaugh Correlation" will arise naturally if the predictor is actually predictively redundant, but emerged from a randomised search by data mining econometricians. For such predictors even bias-corrected conventional tests will be severely distorted. We propose tests that distinguish well between redundant predictors and the true (or "perfect") predictor. An application of our tests does not reject the null that a range of predictors of stock returns are redundant
Best procedures for sample-free item analysis
No full textWright’s (1969) widely used "unconditional" procedure
for Rasch sample-free item calibration is
biased. A correction factor which makes the bias
negligible is identified and demonstrated. Since this
procedure, in spite of its superiority over "conditional"
procedures, is nevertheless slow at calibrating
60 or more items, a simple approximation
which produces comparable estimates in a few
seconds is developed. Since no procedure works on
data containing persons or items with infinite parameter
estimates, an editing algorithm for preparing
item response data for calibration is appended.Wright, Benjamin D.; Douglas, Graham A.. (1977). Best procedures for sample-free item analysis. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/98553
Southern portion of Graham Island, Queen Charlotte Islands, British Columbia.
No full textgeology, J.D. Mackenzie ; geography, British Admiralty and Department of the Naval Service of Canada, Department of Lands, British Columbia, J.D. MacKenzie ; C.O. Senecal, geographer and chief draughtsman.Scale 1:126,720. 2 miles to 1 in. (W 132 24'-W 131 55'/N 53 45'-N 53 08'). Contours shown by spot heights. Includes marginal notes and location map. Includes cross-sections and geological notes. Geology, published charts, township plans and surveys, conducted 1913-1914. To accompany Memoir by J.D. MacKenzie, Geology of Graham Island, British Columbia
Engineers Club dinner in honor of Orville Wright
No full textGroup photograph taken at a dinner in honor of Orville Wright at the Engineers Club, as part of the ceremonies of dedicating the new building at the Massachusetts Institute of Technology. Left to right, seated: John Ritchie, Jr.; C. P. Page; Prof. Arthur E. Kennelly; Prof. E. B. Willson; Philip J. Roosevelt; James P. Monroe; Godfrey L. Cabot; Paul W. Litchfield; Prof. Byerly; Rear Adm. Washington Lee Capps; Orville Wright; Prof. C. H Peabody; Dr. Alexander Graham Bell; and Edward M. Hagar. Standing: J. H. Barbazette; Lester D. Gardner; Roy Knabenshue; Prof. J. C. Riley; Raymond Ware; Thomas Huff; Alan R. Hawley; Glenn L. Martin; Oscar Brindley; Prof. R. W. Willson; Prof A. G. Webster; Dr. Jerome C. Hunsaker; James Means; and A. Klemin.https://corescholar.libraries.wright.edu/special_ms1_photographs/2878/thumbnail.jp
The DSM diagnostic criteria for Female Sexual Arousal Disorder
No full textThis article reviews and critiques the DSM-IV-TR diagnostic criteria for Female Sexual Arousal Disorder (FSAD). An overview of how the diagnostic criteria for FSAD have evolved over previous editions of the DSM is presented and research on prevalence and etiology of FSAD is briefly reviewed. Problems with the essential feature of the DSM-IV-TR diagnosis — “an inability to attain, or to maintain…an adequate lubrication-swelling response of sexual excitement” — are identified. The significant overlap between “arousal” and “desire” disorders is highlighted. Finally, specific recommendations for revision of the criteria for DSM-V are made, including use of a polythetic approach to the diagnosis and the addition of duration and severity criteria
The DSM diagnostic criteria for female orgasmic disorder
No full textThis is the post-print version of the article. The official published version can be found at the link below.This article reviews the DSM diagnostic criteria for Female Orgasmic Disorder (FOD). Following an overview of the concept of female orgasm, research on the prevalence and associated features of FOD is briefly reviewed. Specific aspects of the DSM-IV-TR criteria for FOD are critically reviewed and key issues that should be considered for DSM-V are discussed. The DSM-IV-TR text on FOD focused on the physiological changes that may (or may not) accompany orgasm in women; one of the major recommendations here is that greater emphasis be given to the subjective aspects of the experience of orgasm. Additional specific recommendations are made for revision of diagnostic criteria, including the use of minimum severity and duration criteria, and better acknowledgment of the crucial role of relationship factors in FOD
Address by the Minister in Charge of Treaty of Waitangi Negotiations
No full textThis article is the text of the address provided by Douglas Graham, then-MP and Minister in Charge of Treaty of Waitangi Negotiations, at the "Treaty Claims: The Unfinished Business" Conference. The Minister's address was by way of general remarks as opposed to a prepared address. Graham makes four points on what he believes the unfinished businesses are, or what New Zealand must do, in light of the Conference topic. First, there is a need to reconcile the rights and obligations that exist under the Treaty of Waitangi by the Crown and Māori. Secondly, there is a need to give more emphasis to policies to ensure the development and the protection and preservation of the Māori culture. Thirdly, the legal status of the Treaty must be considered. Fourthly, the issue of Māori self-determination and sovereignty must be addressed. The author concludes that both the Crown and Māori were making positive developments in Treaty negotiations. 
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