Some hydrotechnical problems related to the construction of a causeway in the estuary of the Petitcodiac River, New Brunswick

1982 ◽  
Vol 9 (2) ◽  
pp. 296-307 ◽  
Author(s):  
D. I. Bray ◽  
D. P. DeMerchant ◽  
D. L. Sullivan
Keyword(s):  
Data Collection ◽  
New Brunswick ◽  
Analytical Solutions ◽  
Field Data ◽  
River Estuary ◽  
Fish Passage ◽  
Control Structures ◽  
Physical Systems ◽  
Annual Changes ◽  
Geomorphological Changes

In 1968 about 21 km of the upper end of the Petitcodiac River estuary was cut off as a result of the construction of a causeway, the associated control structures, and a fish passage facility. The primary purposes of these engineering works are to provide a highway link across the estuary and to protect upstream agricultural lands from flooding during periods of high tides.Some of the practical problems that have occurred in the Petitcodiac River estuary as a result of the construction of the causeway are presented in this paper. These problems include: major geomorphological changes, annual changes in bed level near the causeway, beach formation upstream of the causeway, and net upstream transport of sediment through the fishway at the control structure.No detailed analytical solutions are presented due to the expense of extensive data collection and the difficulty of formulating adequate models for such physical systems. However, examples are given to show that limited field data and observations may be used to provide order-of-magnitudc estimates of anticipated changes and to develop an understanding of the dominant processes that are active in such an environment.

ADDITIONS TO STRABOSPOT FOR SEDIMENTARY FIELD DATA COLLECTION AND CONSTRUCTING STRATIGRAPHIC COLUMNS

2018 ◽  
Author(s):  
Casey J. Duncan ◽  
◽  
Marjorie A. Chan ◽  
Elizabeth Hajek ◽  
Diane L. Kamola ◽  
...  
Keyword(s):  
Data Collection ◽  
Field Data ◽  
Field Data Collection

Evaluation of CORSIM Car-Following Model by Using Global Positioning System Field Data

2000 ◽  
Vol 1710 (1) ◽  
pp. 114-121 ◽  
Author(s):  
Sastry Chundury ◽  
Brian Wolshon
Keyword(s):  
Data Collection ◽  
Global Positioning System ◽  
Field Data ◽  
Goodness Of Fit ◽  
Positioning System ◽  
Goodness Of Fit Test ◽  
Distance Information ◽  
Car Following ◽  
Wide Range ◽  
Global Positioning

It has been recognized that CORSIM (and its constituent program, NETSIM) is one of the most widely used and effective computer programs for the simulation of traffic behavior on urban transportation networks. Its popularity is due in large part to the high level of detail incorporated into its modeling routines. However, the car-following models, used for the simulation of driver behavior in the program, have not been formally calibrated or validated. Since the model has performed well in a wide range of applications for so many years, it has always been assumed to have an implied validity. This study evaluated the NETSIM car-following models by comparing their results with field data. Car-following field data were collected using a new data collection system that incorporates new Global Positioning System and geographic information system technologies to improve the accuracy, ease, speed, and cost-effectiveness of car-following data collection activities. First, vehicle position and speed characteristics were collected under field conditions. Then simulated speeds and distances were based on identical lead vehicle actions using NETSIM car-following equations. Comparisons of simulated and field data were completed using both graphical and statistical methods. Although some differences were evident in the graphical comparisons, the graphs overall indicated a reasonable match between the field and simulated vehicle movements. Three statistical tests, including a goodness-of-fit test, appear to support these subjective conclusions. However, it was also found that definitive statistical conclusions were difficult to draw since no single test was able to compare the sets of speed and distance information on a truly impartial basis.

scholarly journals OPTIMALISASI PEMANFAATAN MINERAL FOSFOR DALAM MEMBENTUK KESEHATAN FISIK ANAK USIA DINI MELALUI REEDUKASI KELUARGA

2018 ◽  
Vol 9 (1) ◽  
pp. 24-34
Author(s):  
Sandey Tantra Paramitha
Keyword(s):  
Early Childhood ◽  
Data Analysis ◽  
Data Collection ◽  
Human Body ◽  
Field Data ◽  
Knowledge Society ◽  
The Body ◽  
Childhood Growth ◽  
Field Data Collection ◽  
Descriptive Method

The development of early childhood physical health largely determined by levels of phosphorus contained in the body, due to be the second largest item after the calcium in the human body,  problems become obstacles in developing family knowledge about the importance of the content of phosphorus in the development of early childhood body i.e. environmental conditions is lacking support and there is no massive support from the Ministry of Health important about phosphorus for the growth of early childhood. This research uses descriptive method which aims to describe, illustrate and analyze events in field data collection techniques, using interviews, observation and documentation, as well as using the techniques of data analysis the presentation of data, data reduction and withdrawal of the conclusion. The results obtained show that the society have less knowledge about the importance of phosphorus for early childhood growth, hence the need for the development of the knowledge society on the importance of phosphorous for growth in early childhood, it due to the excess or deficiency of phosphorus will not impact the tub for the body.

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