Minimum time intervals for serial measurements of growth in recumbent length or stature of individual children

2007 ◽  
Vol 88 (2) ◽  
pp. 120-125 ◽  
Author(s):  
JH Himes
Keyword(s):  
Minimum Time ◽  
Time Intervals ◽  
Recumbent Length ◽  
Serial Measurements

Familial correlations for serial measurements of recumbent length and stature

1983 ◽  
Vol 10 (3) ◽  
pp. 281-293 ◽  
Author(s):  
P.J. Byard ◽  
R.M. Siervogel ◽  
A.F. Roche
Keyword(s):  
Recumbent Length ◽  
Serial Measurements

Parent-Specific Adjustments for Evaluation of Recumbent Length and Stature of Children

PEDIATRICS ◽  
1985 ◽  
Vol 75 (2) ◽  
pp. 304-313
Author(s):  
John H. Himes ◽  
Alex F. Roche ◽  
David Thissen ◽  
William M. Moore
Keyword(s):  
Longitudinal Study ◽  
Growth Charts ◽  
Specific Method ◽  
Genetic Contribution ◽  
Health Statistics ◽  
Clinical Tool ◽  
Recumbent Length ◽  
Us Children ◽  
Parent Child Relationships ◽  
Serial Measurements

A clinical "parent-specific" method for evaluating recumbent length and stature of children, allowing for the stature of parents, is presented. This method uses midparent stature and allows adjustment of recumbent length (birth to 3 years) and stature (3 to 18 years) of US children relative to National Center for Health Statistics growth charts. The method is based on parent-child relationships for 586 midparent-child pairs participating in the Fels Longitudinal Study, and on more than 16,000 serial measurements of recumbent length and stature. The method provides a clinical tool to separate the normal genetic contribution of parental stature to stature of children from other factors that affect stature such as malnutrition or disease.

Estimating Time Intervals Using a Recycling Camera Flash: User's Sensitivity to Flash Recycle Times

1988 ◽  
Vol 32 (6) ◽  
pp. 455-459 ◽  
Author(s):  
David N. Aurelio
Keyword(s):  
Minimum Time ◽  
Time Intervals ◽  
Actual Range ◽  
The Subject

To determine user sensitivity to camera flash recycle times, 84 subjects evaluated a range of flash recycle times. Flash recycle time is the minimum time needed to repower a camera battery between two camera flashes. The recycle time was increased from an “acceptable” recycle time to 30 seconds, or until the subject said he or she would replace the battery. It appeared that the rating and acceptability of a flash recycle time was related to the user's current flash recycle time. Subjects typically estimated that their own camera flash recycled in 2–5 seconds even though the actual range of times for the subjects' cameras was 0.5 to 10 seconds. A similar discrepancy occurred when the subjects were asked when they would replace their camera batteries. Possible explanations for estimation discrepancies and reasons for battery replacement are explored.

scholarly journals Optimizing the Long-Term Operating Plan of Railway Marshalling Station for Capacity Utilization Analysis

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Wenliang Zhou ◽  
Xia Yang ◽  
Jin Qin ◽  
Lianbo Deng
Keyword(s):  
Genetic Algorithm ◽  
Computing Time ◽  
Capacity Utilization ◽  
Planning Horizon ◽  
Simulation Method ◽  
Minimum Time ◽  
Time Intervals ◽  
Marshalling Station ◽  
Staying Time

Not only is the operating plan the basis of organizing marshalling station’s operation, but it is also used to analyze in detail the capacity utilization of each facility in marshalling station. In this paper, a long-term operating plan is optimized mainly for capacity utilization analysis. Firstly, a model is developed to minimize railcars’ average staying time with the constraints of minimum time intervals, marshalling track capacity, and so forth. Secondly, an algorithm is designed to solve this model based on genetic algorithm (GA) and simulation method. It divides the plan of whole planning horizon into many subplans, and optimizes them with GA one by one in order to obtain a satisfactory plan with less computing time. Finally, some numeric examples are constructed to analyze (1) the convergence of the algorithm, (2) the effect of some algorithm parameters, and (3) the influence of arrival train flow on the algorithm.

Rotational Characteristics of the Green Solar Corona: 1947-1991

1994 ◽  
Vol 144 ◽  
pp. 139-141 ◽  
Author(s):  
J. Rybák ◽  
V. Rušin ◽  
M. Rybanský
Keyword(s):  
Solar Corona ◽  
World Wide ◽  
Rotation Period ◽  
Original Data ◽  
Coronal Emission ◽  
Time Intervals ◽  
Data Set ◽  
The World ◽  
Coronal Emission Line ◽  
Homogeneous Data

AbstractFe XIV 530.3 nm coronal emission line observations have been used for the estimation of the green solar corona rotation. A homogeneous data set, created from measurements of the world-wide coronagraphic network, has been examined with a help of correlation analysis to reveal the averaged synodic rotation period as a function of latitude and time over the epoch from 1947 to 1991.The values of the synodic rotation period obtained for this epoch for the whole range of latitudes and a latitude band ±30° are 27.52±0.12 days and 26.95±0.21 days, resp. A differential rotation of green solar corona, with local period maxima around ±60° and minimum of the rotation period at the equator, was confirmed. No clear cyclic variation of the rotation has been found for examinated epoch but some monotonic trends for some time intervals are presented.A detailed investigation of the original data and their correlation functions has shown that an existence of sufficiently reliable tracers is not evident for the whole set of examinated data. This should be taken into account in future more precise estimations of the green corona rotation period.

Prolonged Fixation Studies For Spaceflight

1973 ◽  
Vol 31 ◽  
pp. 332-333
Author(s):  
Robert Corbett ◽  
Delbert E. Philpott ◽  
Sam Black
Keyword(s):  
High Pressure ◽  
Living Systems ◽  
Prolonged Storage ◽  
Time Intervals ◽  
Early Signs ◽  
Large Numbers

Observation of subtle or early signs of change in spaceflight induced alterations on living systems require precise methods of sampling. In-flight analysis would be preferable but constraints of time, equipment, personnel and cost dictate the necessity for prolonged storage before retrieval. Because of this, various tissues have been stored in fixatives and combinations of fixatives and observed at various time intervals. High pressure and the effect of buffer alone have also been tried.Of the various tissues embedded, muscle, cartilage and liver, liver has been the most extensively studied because it contains large numbers of organelles common to all tissues (Fig. 1).

Ultrastructure of Lymphatic Capillaries in the Transport of Colloidal Particles

1967 ◽  
Vol 25 ◽  
pp. 186-187
Author(s):  
L. V. Leak ◽  
J. F. Burke
Keyword(s):  
Connective Tissue ◽  
Colloidal Particles ◽  
Ultrastructural Level ◽  
Vital Role ◽  
Time Intervals ◽  
Thorium Dioxide ◽  
Lymphatic Capillary ◽  
Tissue Area ◽  
Rapid Removal ◽  
Tissue Fluids

The vital role played by the lymphatic capillaries in the transfer of tissue fluids and particulate materials from the connective tissue area can be demonstrated by the rapid removal of injected vital dyes into the tissue areas. In order to ascertain the mechanisms involved in the transfer of substances from the connective tissue area at the ultrastructural level, we have injected colloidal particles of varying sizes which range from 80 A up to 900-mμ. These colloidal particles (colloidal ferritin 80-100A, thorium dioxide 100-200 A, biological carbon 200-300 and latex spheres 900-mμ) are injected directly into the interstitial spaces of the connective tissue with glass micro-needles mounted in a modified Chambers micromanipulator. The progress of the particles from the interstitial space into the lymphatic capillary lumen is followed by observing tissues from animals (skin of the guinea pig ear) that were injected at various time intervals ranging from 5 minutes up to 6 months.

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