scholarly journals A comparison of two methods of data collection for modelling productivity of harvesters: manual time study and follow-up study using on-board-computer stem records

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Julia Brewer ◽  
Bruce Talbot ◽  
Helmer Belbo ◽  
Pierre Ackerman ◽  
Simon Ackerman
2019 ◽  
Vol 9 (18) ◽  
pp. 6-25 ◽  
Author(s):  
Tijana Milosevic ◽  
Patricia Dias ◽  
Charles Mifsud ◽  
Christine W. Trueltzsch-Wijnen

The growing use of “smart” toys has made it increasingly important to understand the various privacy implications of their use by children and families. The article is a case study of how the risks to young children’s privacy, posed by the commercial data collection of producers of “smart” toys, were represented in the media. Relying on a content analysis of media coverage in twelve European countries and Australia collected during the Christmas season of 2016/2017, and reporting on a follow-up study in selected countries during the Christmas season of 2017/2018, our article illustrates how the issue of children’s privacy risks was dealt with in a superficial manner, leaving relevant stakeholders without substantive information about the issue; and with minimum representation of children’s voices in the coverage itself.


1996 ◽  
Vol 168 (6) ◽  
pp. 672-678 ◽  
Author(s):  
Ville Lehtinen ◽  
Juha Veijola ◽  
Tomi Lindholm ◽  
Juha Moring ◽  
Pauli Puukka ◽  
...  

BackgroundThe aim was to give estimates of the incidence of different mental disorders from a Finnish prospective epidemiological follow-up study, the UKKI Study.MethodThe original probability sample consisted of 1000 persons, aged 15–64 years. The baseline survey took place in 1969–71, and follow-up surveys were conducted 5 and 16 years after the baseline survey. The research methods included a personal psychiatric interview and data collection from different registers. The diagnostic system was based on the ICD–8 classification.ResultsThe estimated annual incidence of all mental disorders was close to 15 per 1000 both between baseline and the 5-year follow-up as well as between the 5-year and the 16-year follow-up. During the entire 16-year follow-up period the annual incidence of all disorders was 14 per 1000 in men and 17 per 1000 in women. The annual incidence of neurotic disorders was 10 per 1000 in men and 14 per 1000 in women, and that of psychotic disorders 2 per 1000.ConclusionsIn the literature, there are huge differences in the results concerning incidence of mental disorders. The results of the present study were rather close to those of the Swedish Lundby Study, but nowhere near the results of the American ECA Study.


2008 ◽  
Vol 36 (8) ◽  
pp. 1061-1062
Author(s):  
Neeshi Singh Pillay ◽  
Steven J. Collings

In 2002, moderately high levels of modern and old-fashioned racism were documented in a representative sample of 433 students registered in undergraduate courses at a South African university (Pillay & Collings, 2004). In 2006, this survey was replicated using identical methods of data collection and a sample which was representative of university enrolments for 2006 in terms of gender and race: N = 543, gender = 50% female; race = black (40%), Indian (40%), white (17%), colored (3%). Over the four-year period, there was a significant increase in mean item-scores for old-fashioned racism [M = 1.95 vs. 2.15; F(1,971) = 15.16, p < .01], and this finding was supported by a significant study x race interaction, F(3,971) = 6.33, p < .05. Mean item scores increased significantly over time among Indians (2.11 vs. 2.29) but not among blacks (1.74 vs. 1.76), coloreds (2.01 vs. 2.04), or whites (2.33 vs. 2.35). A significant increase in levels of modern racism over the four-year period [M = 2.74 vs. 3.10; F(1,971) = 8.48, p < .01] was indicated by a significant study x race interaction, F(3,971) = 7.31, p < .05, with mean item scores increasing significantly over time among Indians (2.94 vs. 3.62) and whites (3.00 vs. 3.58) but not among blacks (2.04 vs. 2.06) or coloreds (2.47 vs. 2.49). Together these findings suggest that both overt and covert forms of racism persist, with levels of racism varying as a function of racial group membership.


2020 ◽  
pp. 93-118
Author(s):  
Bendix Carstensen

This chapter assesses the analysis and representation of follow-up data. follow-up refers to the process of monitoring persons over time for occurrence of a (set of) prespecified event(s). Practical data collection is often via look-up in registers or databases. The basic requirements for recordings in a follow-up study include date of entry to the study, date of exit from the study, and the status of the person at the exit date. The chapter then explains the likelihood from a follow-up study and why one can analyse rates using Poisson regression. The likelihood contribution from a single person's follow-up can be subdivided in contributions from subintervals of the follow-up. The chapter details the task of splitting the follow-up time along a time-scale. Finally, it considers time-dependent variables.


2001 ◽  
Vol 13 (S1) ◽  
pp. 7-18 ◽  
Author(s):  
Ian McDowell ◽  
Gerry Hill ◽  
Joan Lindsay

The Canadian Study of Health and Aging is a multicenter, population-based cohort study of dementia with a sample of 10,263 participants aged 65 or over. Field work began in 1991, and a follow-up study was undertaken in 1996–97. The present article describes the origins and objectives of the study, provides an overview of its design, organization, and data collection methods, and offers a brief summary of the main results.


1992 ◽  
Vol 14 (3) ◽  
pp. 1-13 ◽  
Author(s):  
Juan Rivera ◽  
Reynaldo Martorell ◽  
Hilda Castro

This paper describes the data collection of a follow-up study of subjects who received nutrition supplementation during their early childhood. At the time of follow-up, the subjects were between 10 and 26 years old. The study subjects; the tests, measurements, and interviews made on them; the organization and logistics of the data collection; the training, supervision, and data flow processes; and the teams responsible for the data collection are all described briefly. Coverage rates are shown by village, study area, migration status, sex, and age cohort. Potential biases due to incomplete coverage are discussed.


2019 ◽  
Vol 3 (1) ◽  
pp. e000405 ◽  
Author(s):  
Karolien Van De Maele ◽  
Inge Gies ◽  
Roland Devlieger

BackgroundThe offspring of obese pregnant women are at risk for adverse metabolic, inflammatory and cardiovascular programming. Comprehensive long-term data are lacking on the contribution of changes in maternal weight after bariatric surgery before pregnancy compared with lifestyle interventions during pregnancy on the cardiovascular programming of the offspring.MethodsEFFECTOR is designed as a cross-sectional cohort follow-up study targeting the children of different groups of women who were previously studied during their pregnancy. Four subgroups of children are identified, based on maternal weight characteristics during pregnancy: normal weight women, obese women without any intervention and obese women who underwent a lifestyle intervention during or bariatric surgery before pregnancy. Data collection is performed as a single study visit at home. Data on the sociodemographic situation, food habits and psychomotor development are obtained through questionnaires. During the home visit, extensive anthropometric and vascular assessment is performed. Information on body composition is provided by assessment of body weight and height, bioelectrical impedance analysis, skinfold measurements and ultrasound. Endothelial function is measured by non-invasive peripheral arterial tonometry (EndoPAT 2000). Biomarkers performed in blood and urinalysis conclude the data collection process.Trial registration numberNCT02992106(Pre-results).


Author(s):  
C. Wolpers ◽  
R. Blaschke

Scanning microscopy was used to study the surface of human gallstones and the surface of fractures. The specimens were obtained by operation, washed with water, dried at room temperature and shadowcasted with carbon and aluminum. Most of the specimens belong to patients from a series of X-ray follow-up study, examined during the last twenty years. So it was possible to evaluate approximately the age of these gallstones and to get information on the intensity of growing and solving.Cholesterol, a group of bile pigment substances and different salts of calcium, are the main components of human gallstones. By X-ray diffraction technique, infra-red spectroscopy and by chemical analysis it was demonstrated that all three components can be found in any gallstone. In the presence of water cholesterol crystallizes in pane-like plates of the triclinic crystal system.


1997 ◽  
Vol 24 (10) ◽  
pp. 713-717 ◽  
Author(s):  
R. NAPANKANGAS ◽  
M.A.M. SALONEN ◽  
A.M. RAUSTIA

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