T C Aitchison
Biographic Data
| ID | 1069762 |
|---|---|
| NAME | T C Aitchison |
| GIVEN NAMES | T C |
| FAMILY NAME | Aitchison |
| SIGNATURE | AITCHISON T C |
| VERIFIED | No |
| TOTAL WORKS | 8 |
| TOTAL CITATIONS | 85 |
| AUTHOR COUNT | 8 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1984 |
| LATEST PUBLICATION YEAR | 1990 |
| H-INDEX | 6 |
An Overview of Some Interlaboratory Studies
Many interlaboratory studies have been made in the 14 C community at irregular intervals over the past ten years. At times, the results from these studies have been contentious, mostly because of the lack of consistency in their findings. The importance of regular exercises has become particularly acute due to the large number of operating laboratories and the diversity of their methodologies. Hence, we briefly review the studies that have been m…
Report on Stage 3 of the International Collaborative Program
This report on the third and final stage of the International Collaborative Program concentrates on the analysis of internal and external variability of 14 C dates obtained from samples involved in the full 14 C dating process. Thirty-eight laboratories took part in this stage with most producing 8 14 C dates from 3 sets of duplicate material (eg, wood, shell and peat) and 2 single samples of wood of known ages 190 yr BP apart. From the 3 sets of…
International Collaborative Study
The success of any intercomparison exercise depends largely on participation and cooperation of a sufficient number of laboratories and the selection of a suitable suite of samples. Unless the latter is satisfactorily devised, the former cannot be guaranteed. The hierarchical nature of this study has necessarily resulted in a far more comprehensive set of sample types than has previously been employed. The exercise was structured to satisfy the f…
An Overview of All Three Stages of the International Radiocarbon Intercomparison
The International Collaborative Study involved a wide range of sample materials and ages and, on completion, assessed each stage independently (Scott et al 1989; Aitchison et al 1990). We combine here the three stages of the study and provide an overview of the uncertainties in the dating procedure as a whole and in its component processes. Three key optimal performance indices, related to internal and external precision and to bias, have been de…
Radiocarbon
An abstract is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content
A Comparison of Methods Used for the Calibration of Radiocarbon Dates
Current calibration methods for single and replicate 14 C dates are compared. Various forms of tabular and graphic output are discussed. Results from all the methods show reasonable agreement but further methodological development and improvements in computer output are required. Comparison of existing techniques for a series of non-contemporaneous dates showed less agreement amongst participants on this issue. We recommend that calibrated dates …
An Interim Progress Report on Stages 1 and 2 of the International Collaborative Program
We report in this paper on a preliminary analysis of Stages 1 and 2 of the International Collaborative program. We have chosen to concentrate on the internal and external consistencies of the participating laboratories. The two stages so far completed have dealt only with the processes of sample synthesis and counting, and results indicate that the major component of variability lies in the counting process. Outlying laboratories are observed at …
A comparison of the treatment of errors in radiocarbon dating calibration methods
An Overview of All Three Stages of the International Radiocarbon Intercomparison
The International Collaborative Study involved a wide range of sample materials and ages and, on completion, assessed each stage independently (Scott et al 1989; Aitchison et al 1990). We combine here the three stages of the study and provide an overview of the uncertainties in the dating procedure as a whole and in its component processes. Three key optimal performance indices, related to internal and external precision and to bias, have been de…
A Comparison of Methods Used for the Calibration of Radiocarbon Dates
Current calibration methods for single and replicate 14 C dates are compared. Various forms of tabular and graphic output are discussed. Results from all the methods show reasonable agreement but further methodological development and improvements in computer output are required. Comparison of existing techniques for a series of non-contemporaneous dates showed less agreement amongst participants on this issue. We recommend that calibrated dates …
An Interim Progress Report on Stages 1 and 2 of the International Collaborative Program
We report in this paper on a preliminary analysis of Stages 1 and 2 of the International Collaborative program. We have chosen to concentrate on the internal and external consistencies of the participating laboratories. The two stages so far completed have dealt only with the processes of sample synthesis and counting, and results indicate that the major component of variability lies in the counting process. Outlying laboratories are observed at …
Report on Stage 3 of the International Collaborative Program
This report on the third and final stage of the International Collaborative Program concentrates on the analysis of internal and external variability of 14 C dates obtained from samples involved in the full 14 C dating process. Thirty-eight laboratories took part in this stage with most producing 8 14 C dates from 3 sets of duplicate material (eg, wood, shell and peat) and 2 single samples of wood of known ages 190 yr BP apart. From the 3 sets of…
International Collaborative Study
The success of any intercomparison exercise depends largely on participation and cooperation of a sufficient number of laboratories and the selection of a suitable suite of samples. Unless the latter is satisfactorily devised, the former cannot be guaranteed. The hierarchical nature of this study has necessarily resulted in a far more comprehensive set of sample types than has previously been employed. The exercise was structured to satisfy the f…
Radiocarbon
An abstract is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content
An Overview of Some Interlaboratory Studies
Many interlaboratory studies have been made in the 14 C community at irregular intervals over the past ten years. At times, the results from these studies have been contentious, mostly because of the lack of consistency in their findings. The importance of regular exercises has become particularly acute due to the large number of operating laboratories and the diversity of their methodologies. Hence, we briefly review the studies that have been m…
A comparison of the treatment of errors in radiocarbon dating calibration methods
A comparison of the treatment of errors in radiocarbon dating calibration methods
A Comparison of Methods Used for the Calibration of Radiocarbon Dates
Current calibration methods for single and replicate 14 C dates are compared. Various forms of tabular and graphic output are discussed. Results from all the methods show reasonable agreement but further methodological development and improvements in computer output are required. Comparison of existing techniques for a series of non-contemporaneous dates showed less agreement amongst participants on this issue. We recommend that calibrated dates …
An Interim Progress Report on Stages 1 and 2 of the International Collaborative Program
We report in this paper on a preliminary analysis of Stages 1 and 2 of the International Collaborative program. We have chosen to concentrate on the internal and external consistencies of the participating laboratories. The two stages so far completed have dealt only with the processes of sample synthesis and counting, and results indicate that the major component of variability lies in the counting process. Outlying laboratories are observed at …
An Overview of Some Interlaboratory Studies
Many interlaboratory studies have been made in the 14 C community at irregular intervals over the past ten years. At times, the results from these studies have been contentious, mostly because of the lack of consistency in their findings. The importance of regular exercises has become particularly acute due to the large number of operating laboratories and the diversity of their methodologies. Hence, we briefly review the studies that have been m…
Report on Stage 3 of the International Collaborative Program
This report on the third and final stage of the International Collaborative Program concentrates on the analysis of internal and external variability of 14 C dates obtained from samples involved in the full 14 C dating process. Thirty-eight laboratories took part in this stage with most producing 8 14 C dates from 3 sets of duplicate material (eg, wood, shell and peat) and 2 single samples of wood of known ages 190 yr BP apart. From the 3 sets of…
International Collaborative Study
The success of any intercomparison exercise depends largely on participation and cooperation of a sufficient number of laboratories and the selection of a suitable suite of samples. Unless the latter is satisfactorily devised, the former cannot be guaranteed. The hierarchical nature of this study has necessarily resulted in a far more comprehensive set of sample types than has previously been employed. The exercise was structured to satisfy the f…
An Overview of All Three Stages of the International Radiocarbon Intercomparison
The International Collaborative Study involved a wide range of sample materials and ages and, on completion, assessed each stage independently (Scott et al 1989; Aitchison et al 1990). We combine here the three stages of the study and provide an overview of the uncertainties in the dating procedure as a whole and in its component processes. Three key optimal performance indices, related to internal and external precision and to bias, have been de…
Radiocarbon
An abstract is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content
Archaeology and ancient environmental studies (6 works) · Computer Science (6 works) · Mathematics (6 works) · Radiocarbon dating (6 works) · Archaeology (5 works) · Statistics (5 works) · Geography (4 works) · Geology (4 works) · Chemistry (3 works) · Chromatography (3 works)