Statistical Studies on Modified Neupert Effect

A method is described in an attempt to make medical records suitable for epidemiologigri: purposes. Every case of a disease is recorded on an appropriate punched card with the object of working towards a general description of a disease through the collation of several cases of the same diagnosis. This punched card represents a very great condensation of the original record. Special care has been applied to state as precisely as possible the time variable, particularly as far as its origin and unit of measure are concerned, in order to demonstrate the existence of causal relations between diseases. Such cards are also intended to make easier statistical studies in clinical pathology, in evaluation of new laboratory techniques, and in therapeutical trials.

Download Full-text

Acquisition, Loss and Innovation in Chuquisaca Quechua—What Happened to Evidential Marking?

Languages ◽

10.3390/languages6020076 ◽

2021 ◽

Vol 6 (2) ◽

pp. 76

Author(s):

Susan E. Kalt

Keyword(s):

Language Acquisition ◽

Child Language ◽

Epistemic Modality ◽

Reverse Order ◽

Related Variety ◽

Child Language Acquisition ◽

Statistical Studies ◽

L1 And L2

Variation among closely related languages may reveal the inner workings of language acquisition, loss and innovation. This study of the existing literature and of selected interviews from recent narrative corpora compares the marking of evidentiality and epistemic modality in Chuquisaca, Bolivian Quechua with its closely related variety in Cuzco, Peru and investigates three hypotheses: that morpho-syntactic attrition proceeds in reverse order of child language acquisition, that convergence characterizes the emergence of grammatical forms different from L1 and L2 in contact situations, and that the Quechua languages are undergoing typological shift toward more isolating morphology. It appears that reportive -sis disappeared first in Bolivia, with eyewitness/validator -min retaining only the validator function. This finding seems to concord with reverse acquisition since it has previously been claimed that epistemic marking is acquired earlier than evidential marking in Cuzco. Meanwhile, Spanish and Quechua in nearby Cochabamba are claimed to mark reportive evidentiality via freestanding verbs of saying. I explore the reportive use of ñiy ‘to say’ in Chuquisaca as compared to Cochabamba and Cuzco and suggest the need for comparative statistical studies of evidential and epistemic marking in Southern Quechua.

Download Full-text

Statistical Studies Using Goodness-of-Fit Techniques with Dynamic Underwater Visible Light Communication Channel Modeling

IEEE Access ◽

10.1109/access.2021.3072689 ◽

2021 ◽

pp. 1-1

Author(s):

Mohamed Mahmoud ◽

Ayman I. Boghdady ◽

Abd El-Rahman A. El-Fikky ◽

Moustafa H. Aly

Keyword(s):

Visible Light ◽

Goodness Of Fit ◽

Communication Channel ◽

Channel Modeling ◽

Visible Light Communication ◽

Statistical Studies

Download Full-text

Confirming known planetary trends using a photometrically selected Kepler sample

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/staa3921 ◽

2020 ◽

Author(s):

Jonah T Hansen ◽

Luca Casagrande ◽

Michael J Ireland ◽

Jane Lin

Keyword(s):

Sample Size ◽

Robust Statistics ◽

Narrow Band ◽

Small Sample Size ◽

Small Sample ◽

Fitting Algorithm ◽

Statistical Studies ◽

The Rich ◽

Host Stars ◽

High Metallicity

Abstract Statistical studies of exoplanets and the properties of their host stars have been critical to informing models of planet formation. Numerous trends have arisen in particular from the rich Kepler dataset, including that exoplanets are more likely to be found around stars with a high metallicity and the presence of a “gap” in the distribution of planetary radii at 1.9 R⊕. Here we present a new analysis on the Kepler field, using the APOGEE spectroscopic survey to build a metallicity calibration based on Gaia, 2MASS and Strömgren photometry. This calibration, along with masses and radii derived from a Bayesian isochrone fitting algorithm, is used to test a number of these trends with unbiased, photometrically derived parameters, albeit with a smaller sample size in comparison to recent studies. We recover that planets are more frequently found around higher metallicity stars; over the entire sample, planetary frequencies are 0.88 ± 0.12 percent for [Fe/H] < 0 and 1.37 ± 0.16 percent for [Fe/H] ≥ 0 but at two sigma we find that the size of exoplanets influences the strength of this trend. We also recover the planet radius gap, along with a slight positive correlation with stellar mass. We conclude that this method shows promise to derive robust statistics of exoplanets. We also remark that spectrophotometry from Gaia DR3 will have an effective resolution similar to narrow band filters and allow to overcome the small sample size inherent in this study.

Download Full-text