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Book part
Publication date: 19 November 2014

Miguel Belmonte and Gary Koop

This paper investigates the usefulness of switching Gaussian state space models as a tool for implementing dynamic model selection (DMS) or averaging (DMA) in time-varying…

Abstract

This paper investigates the usefulness of switching Gaussian state space models as a tool for implementing dynamic model selection (DMS) or averaging (DMA) in time-varying parameter regression models. DMS methods allow for model switching, where a different model can be chosen at each point in time. Thus, they allow for the explanatory variables in the time-varying parameter regression model to change over time. DMA will carry out model averaging in a time-varying manner. We compare our exact method for implementing DMA/DMS to a popular existing procedure which relies on the use of forgetting factor approximations. In an application, we use DMS to select different predictors in an inflation forecasting application. We find strong evidence of model switching. We also compare different ways of implementing DMA/DMS and find forgetting factor approaches and approaches based on the switching Gaussian state space model to lead to similar results.

Abstract

Details

Advances in Librarianship
Type: Book
ISBN: 978-0-12024-615-1

Book part
Publication date: 25 November 2019

Amira L. Allen, Wendy D. Manning, Monica A. Longmore and Peggy C. Giordano

In the US, approximately 70% of mothers and 93% of fathers with children who are under 18 years are in the paid labor force, and studies have documented that employed parents with…

Abstract

In the US, approximately 70% of mothers and 93% of fathers with children who are under 18 years are in the paid labor force, and studies have documented that employed parents with young children often experience high levels of stress as they attempt to manage or balance the demands of their work and family roles. The current study focused on factors associated with observed variability in reports about work–family stress and considered the roles of parenting stress, child characteristics, as well as conflict with the other parent. Prior research has shown that parenting a more “difficult” child is a source of parenting stress, but such studies have not focused specifically on work–family conflict as a consequential outcome, have tended to be limited to older parents, and often have focused only on mothers. We also investigated the role of partner disagreements about assistance with parenting responsibilities as a further complication to family life that may influence perceived work–family stress among co-residential parents. Drawing on data from employed young adult parents, the Toledo Adolescent Relationships Study (TARS) (n=263), we found that having a child perceived as more difficult was associated with greater work–family stress. Among co-residential parents, stress but not parenting disagreements with the other parent was associated with greater work–family stress. The findings highlight the importance of providing institutional and informal support to such parents.

Details

Transitions into Parenthood: Examining the Complexities of Childrearing
Type: Book
ISBN: 978-1-83909-222-0

Keywords

Article
Publication date: 8 October 2018

Anna Marie Johnson, Amber Willenborg, Christopher Heckman, Joshua Whitacre, Latisha Reynolds, Elizabeth Alison Sterner, Lindsay Harmon, Syann Lunsford and Sarah Drerup

This paper aims to present recently published resources on information literacy and library instruction through an extensive annotated bibliography of publications covering all…

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Abstract

Purpose

This paper aims to present recently published resources on information literacy and library instruction through an extensive annotated bibliography of publications covering all library types.

Design/methodology/approach

This paper annotates English-language periodical articles, monographs, dissertations and other materials on library instruction and information literacy published in 2017 in over 200 journals, magazines, books and other sources.

Findings

The paper provides a brief description for all 590 sources.

Originality/value

The information may be used by librarians and interested parties as a quick reference to literature on library instruction and information literacy.

Details

Reference Services Review, vol. 46 no. 4
Type: Research Article
ISSN: 0090-7324

Keywords

Article
Publication date: 8 February 2011

C.H.S. Ruxton and E. Derbyshire

There is a strong interest in the quality of children's diets as this can impact on current and future health. The aim of this paper is to review current and past literature on UK…

1795

Abstract

Purpose

There is a strong interest in the quality of children's diets as this can impact on current and future health. The aim of this paper is to review current and past literature on UK children's diets to evaluate the adequacy of nutrient intakes in comparison with recommendations, and to identify population groups that may be at particular risk of nutritional deficiencies.

Design/methodology/approach

A literature review was carried out to locate and summarise up‐to‐date published studies and reports which addressed dietary intakes of UK children, trends overtime and current dietary issues.

Findings

Although UK children's diets appear to have improved in recent years, intakes of several key nutrients remain below dietary recommendations. Iron, calcium, magnesium, potassium and zinc are especially low in some groups, whilst intakes of saturated fat and sugar exceed current targets. Thus, further improvements are needed. In the meantime, parents may consider giving children a daily multi‐vitamin to ensure that micronutrient recommendations are achieved. The lack of child‐specific targets for fibre, long‐chain omega‐3 polyunsaturated fatty acids (LCn3PUFA), vitamin D and fruit and vegetables portions makes it difficult to properly evaluate children's diets for these important dietary components.

Research limitations/implications

Future studies should use consistent age ranges and methods of dietary assessment to enable better comparisons. Research is needed to underpin child‐specific dietary guidelines for LCn3PUFA, fibre and vitamin D.

Originality/value

This paper gives a concise, up‐to‐date overview of the current diet quality of UK children.

Details

Nutrition & Food Science, vol. 41 no. 1
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 1 December 1997

C.J. Bates

Notes difficulties related to devising specific functional tests of vitamin C status. Looks at approaches used in the study of the mechanisms of vitamin C absorption and their…

381

Abstract

Notes difficulties related to devising specific functional tests of vitamin C status. Looks at approaches used in the study of the mechanisms of vitamin C absorption and their limitations. Outlines the goals of a MAFF project to begin in 1997; these being, for example, to improve current analytical procedures in this area.

Details

Nutrition & Food Science, vol. 97 no. 6
Type: Research Article
ISSN: 0034-6659

Keywords

Book part
Publication date: 1 January 2008

Michiel de Pooter, Francesco Ravazzolo, Rene Segers and Herman K. van Dijk

Several lessons learnt from a Bayesian analysis of basic macroeconomic time-series models are presented for the situation where some model parameters have substantial posterior…

Abstract

Several lessons learnt from a Bayesian analysis of basic macroeconomic time-series models are presented for the situation where some model parameters have substantial posterior probability near the boundary of the parameter region. This feature refers to near-instability within dynamic models, to forecasting with near-random walk models and to clustering of several economic series in a small number of groups within a data panel. Two canonical models are used: a linear regression model with autocorrelation and a simple variance components model. Several well-known time-series models like unit root and error correction models and further state space and panel data models are shown to be simple generalizations of these two canonical models for the purpose of posterior inference. A Bayesian model averaging procedure is presented in order to deal with models with substantial probability both near and at the boundary of the parameter region. Analytical, graphical, and empirical results using U.S. macroeconomic data, in particular on GDP growth, are presented.

Details

Bayesian Econometrics
Type: Book
ISBN: 978-1-84855-308-8

Article
Publication date: 1 November 2011

Carrie Ruxton

The purpose of this paper is to examine the potential role of micronutrients and omega‐3 fatty acids in promoting healthier ageing.

850

Abstract

Purpose

The purpose of this paper is to examine the potential role of micronutrients and omega‐3 fatty acids in promoting healthier ageing.

Design/methodology/approach

A literature review was conducted using Medline and key words relevant to ageing, nutritional status, nutrient intake and disease risk. Data from the National Diet and Nutrition Survey (NDNS) were used to determine micronutrient adequacy.

Findings

The NDNS showed that intakes of vitamin A, B2, B6, folic acid, iron, calcium, magnesium, zinc and iodine fell below recommended levels for groups of older people. Vitamins and mineral supplements may improve nutritional status, lower the risk of deficiency, and impact favourably on disease markers.

Practical implications

The evidence suggests that dietary interventions and supplementation may become increasingly important in maintaining health and quality of life in older people.

Originality/value

This paper highlights the positive role of nutrition in healthy ageing.

Details

Nutrition & Food Science, vol. 41 no. 6
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 1 June 1998

G. Smithers, S. Finch, W. Doyle, C. Lowe, C.J. Bates, A. Prentice and P.C. Clarke

Commissioned by the Ministry of Agriculture, Fisheries and Food, the Department of Health and carried out by Social and Community Planning Research and MRC Dunn Nutrition Unit…

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Abstract

Commissioned by the Ministry of Agriculture, Fisheries and Food, the Department of Health and carried out by Social and Community Planning Research and MRC Dunn Nutrition Unit, the dental hospitals of the Universities of Newcastle and Birmingham and the Department of Epidemiology of the University of London, this research forms part of the National Diet and Nutrition Survey. Set up in 1992 the surveys cover representative groups of the population and examine the diet of the over‐65s in terms of actual dietary intake, habits, energy and nutrient intakes, physical measurements. Regional and socio‐economic comparisons are made.

Details

Nutrition & Food Science, vol. 98 no. 3
Type: Research Article
ISSN: 0034-6659

Keywords

Abstract

Details

Transport Survey Quality and Innovation
Type: Book
ISBN: 978-0-08-044096-5

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