نتایج جستجو برای: c01
تعداد نتایج: 186 فیلتر نتایج به سال:
Over the past decade, observations of relativistic outflows from outbursting X-ray binaries in Galactic field have grown significantly. In this work, we present first detection moving and decelerating radio-emitting an binary a globular cluster. MAXI J1848-015 is recently discovered transient direction cluster GLIMPSE-C01. Using VLA, monitoring campaign with MeerKAT observatory for 500 days, mo...
We propose serial correlation robust asymptotic confidence bands for the receiver operating characteristic (ROC) curves estimated by quasi-maximum likelihood in the binormal model. Our simulation experiments confirm that this new method performs fairly well in finite samples. The conventional procedure is found to be markedly undersized in terms of yielding empirical coverage probabilities lowe...
Consider a linear model setting in which the explanatory variables are specified by time series. To sequentially test for the stability of the regression parameters in time, we introduce a detector which is based on the first excess time of a CUSUM-type statistic over a suitably defined threshold function. The main aim of this paper is to derive the limit distribution of the detector. By provid...
We consider statistical inference on a single component of a parameter vector that satisfies a finite number of moment inequalities. The null hypothesis for this single component is given a dual characterization as a composite hypothesis regarding point identified parameters. We also are careful in the specification of the alternative hypothesis that also has a dual characterization as a compos...
Relying on the well-established theoretical result that uncertainty has a common and an idiosyncratic component, we propose a new measure of earnings forecast uncertainty as the sum of dispersion among analysts and the variance of mean forecast errors estimated by a GARCH model. The new measure is based on both common and private information available to analysts at the time they make their for...
This paper explores the issue of efficiency in English higher education using data envelopment analysis and stochastic frontier analysis to estimate an output distance function (which incorporates measures of both quantity and quality of teaching and research inputs and outputs) over a thirteen-year period. The study compares the efficiency estimates derived from various estimation methods, and...
Aggregated qualitative survey data provide timely, but often imperfect, macroeconomic indicators. Exploiting a unique panel dataset for the UK, which contains matched firm-level responses from both qualitative and quantitative surveys, we find that firms’ responses are influenced not only by their own current and past output and lagged qualitative responses but also by an indicator of aggregate...
Since isolates of Hymenolepis nana infecting humans and rodents are morphologically indistinguishable, the only way they can be reliably identified is by comparing the parasite in each host using molecular tools. In the current study, isolates of H. nana from rodent and human hosts from a broad geographical range were sequenced at the ribosomal first internal transcribed spacer (ITS1), the mito...
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