A number of tests for non-linear dependence in time series are presented and implemented on a set of 10 daily sterling exchange rates covering the entire postBretton Ð Woods era until the present day. Irrefutable evidence of non-linearity is shown in many of the series, but most of this dependence can apparently be explained by reference to the GARCH family of models. It is suggested that the l...

We summarize some recent results showing how the lambdacalculus may be obtained by considering the metric completion (with respect to a suitable notion of distance) of a space of affine lambda-terms, i.e., lambda-terms in which abstractions bind variables appearing at most once. This formalizes the intuitive idea that multiplicative additive linear logic is “dense” in full linear logic (in fact...

Introduction: One of the main steps in the optimization process in diagnostic imaging is the quality control of radiology devices. The usual method of CT scan calibration is used of a phantom. The phantom created a certain weakening for the radiation through which it passes. One of the most suitable methods for quantitative analysis of the resolution and contrast in CT scan im...

Linearity-generating” processes offer a tractable procedure to model cash-flows and pricing kernels in a way that yields exact closed form expressions for bond and stock prices. Prices are simply affine (not exponential-affine) in the factors. The linearity-generating class operates in discrete and continuous time with an arbitrary number of factors. This paper presents novel and general regula...

Space–time block codes for providing transmit diversity in wireless communication systems are considered. Based on the principles of linearity and unitarity, a complete classification of linear codes is given in the case when the symbol constellations are complex, and the code is based on a square matrix or restriction of such by deleting columns (antennas). Maximal rate delay optimal codes are...

Recent research suggests that both the accuracy and linearity of number estimations are a source of difficulty in mathematical learning. There is also a range of evidence to suggest that children in East Asia are typically mathematically precocious compared to Western peers. Bringing these strands of work together, we discuss number line estimations involving an ability match study of children ...

The size-Ramsey number r̂(F ) of a graph F is the smallest integer m such that there exists a graph G on m edges with the property that every colouring of the edges of G with two colours yields a monochromatic copy of F . In 1983, Beck provided a beautiful argument that shows that r̂(Pn) is linear, solving a problem of Erdős. In this note, we provide another proof of this fact that actually gives...

background and aims. the imaging techniques commonly used for foreign body detection include plain radiography, xeroradiography, computed tomography (ct) scans, magnetic resonance imaging (mri) and ultrasonography. the aim of the present study was to compare cone-beam computed tomography (cbct) with conventional ct scan in determination of the exact location of a foreign body in the maxillofaci...

the c7-ras 6/061-004 training course by the international atomic energy agency/regional cooperative agreement (iaea/rca) was held in chiba in 2014. the syllabus, pre- and post-course evaluations, and survey questionnaire results were assembled in this course. the post-course evaluation, including 32 questions similar to the pre-course evaluation, was performed right after the end of the final e...