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Seasonal cointegration, common seasonals, and forecasting seasonal series

Empirical Economics, 1993
Seasonal cointegration generalizes the idea of cointegration to processes with unit roots at frequencies different from 0. Here, “common seasonals,” also a dual notion of common trends, is adopted for the seasonal case. The features are demonstrated in exemplary models for German and U.K. data.
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Season's appreciations.

La Clinica terapeutica, 2015
To follow the tradition set by the late Franz Halberg, highlights of research performed over the last year from his Minnesota Center are summarized. They illustrate the broad international cooperation enjoyed by his center and the diversity of applications of the discipline he founded.
G, Cornélissen   +7 more
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Seasonal diets, seasonal microbiota

Science, 2017
Microbiota Among the Hadza of western Tanzania, a few hundred people still live in small groups as hunter-gatherers, reliant solely on the wild environment for food. Smits et al. found that the microbiota of these people reflects the seasonal availability of different types of food (see the Perspective by Peddada). Between seasons, striking differences
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Trend, seasonality and seasonal adjustment [PDF]

open access: possible, 2015
The aim of this paper is to set out criteria for defining trend and seasonal components in a time series. The criteria are set up primarily in terms of properties involving prediction. Because a structural time series model is set up in terms of components of interest, the relevant information on these components is given directly. It is shown that the
A. C. Harvey, Pedro L. Valls Pereira
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Seasonal Affective Disorders: Seasonal Energy Syndrome?

Archives of General Psychiatry, 1986
To the Editor.— Having extensive experience in the diagnosis and treatment of seasonal affective disorders, 1 which we would better classify as seasonal energy syndrome , we wish to alert clinicians to several major concerns. 1. The disorder is not limited to the fall-winter period but indeed involves a spring-summer syndrome of hyperphoria ...
P S, Mueller, R K, Davies
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