Quality assurance programme for hydrometric data in New Zealand

1989 ◽  
Vol 34 (2) ◽  
pp. 185-202 ◽  
Author(s):  
M. P. MOSLEY ◽  
A. L. MCKERCHAR
Radiocarbon ◽  
1995 ◽  
Vol 37 (2) ◽  
pp. 797-803 ◽  
Author(s):  
A. G. Hogg ◽  
Thomas Higham ◽  
Steve Robertson ◽  
Roelf Beukens ◽  
Tuovi Kankainen ◽  
...  

The 14C Quality Assurance Programme coordinated by the IAEA (Rozanski et al. 1992) prepared a set of five new intercomparison materials, including 40–50 ka old subfossil wood excavated from New Zealand peat bogs (IAEA C-4 standard). Statistical analysis of 79 14C measurements made on the wood indicated considerable variation in the results, with a marked skewness toward more modern values. The wide range of results and the possibility of inhomogeneity within the standard prompted the recovery and analysis of replacement material. The new subfossil wood sample is kauri (Agathis australis), at least 50 ka old, excavated from a swamp in Northland. It is in the form of a single plank, 6 m long, weighing 80 kg. It will be forwarded to the IAEA in Vienna for milling and distribution. Subsamples were obtained from both ends of the plank and analyzed by six laboratories. We present here the results of these analyses and compare them with the previous IAEA intercalibration results for the C-4 standard.


2021 ◽  
Author(s):  
◽  
Anna Huia Williams

<p>In formal education and training, internal assessment (in which assessor judgements are made within education organisations) is widely used for summative purposes to contribute to the award of qualifications. In many jurisdictions including New Zealand, organisations that conduct these high-stakes internal assessments are required by regulation to engage in moderation within the organisation and with external quality assurance bodies to quality-assure those assessments. However, policies are rarely implemented directly as intended. Instead, they are enacted by organisations, that is, policies are interpreted and translated, with multiple factors influencing this process. One such factor is the person who takes the role of ‘policy narrator’ and leads the policy interpretation and translation within the organisation. In New Zealand there is further potential for enactment variation because education organisations are largely self-governing, and thus have substantial freedom regarding organisational systems and practices. Moderation is commonly held to have both accountability and improvement purposes. However, it is unknown what policy narrators within New Zealand organisations consider the functions of moderation to be.  This study sought to explore what the academic leaders who are responsible for moderation in New Zealand secondary and tertiary organisations (i.e., those likely to be policy narrators) perceive as the functions of internal moderation and national moderation conducted by the New Zealand Qualifications Authority (NZQA moderation). Further, the study sought to ascertain whether there are any observable differences in perceptions according to organisation type. A pragmatic mixed methods sequential research design was implemented. An online survey instrument was developed informed from interview findings, and then administered using a census approach to collect data (n = 221). Both qualitative and quantitative data analyses were conducted.  Academic leaders were found to believe that moderation functions across multiple embedded contexts, from the immediate assessment event, to organisational and societal contexts. Internal and NZQA moderation were seen to work in the narrowly-focused area of assessment quality, and the broader areas of professional learning, organisational quality assurance, maintaining public and stakeholder confidence, and educational quality (internal moderation only). Instead of subscribing to the dominant improvement and accountability discourses, for the most part academic leaders tended think of moderation in more encompassing ways than the literature suggests.  Respondents from Private Training Enterprises (PTEs) tended to see the organisational quality assurance and educational quality functions as being more important or having a stronger emphasis, and to hold a broader view of moderation functions, than those from schools.  These findings could assist those in organisations to recognise and examine the influence of their own perceptions on practice, and identify opportunities to optimise how their organisations use moderation. The findings enable policy makers to ascertain the degree of alignment between policy intent and enactment, and could inform policy development and communication to the sector. Further, the potential for NZQA to increase the broader and improvement-focused aspects of moderation practice, while maintaining—and enhancing—its accountability focus is highlighted.</p>


Author(s):  
Cas W Weykamp ◽  
Theo J Penders ◽  
Frits A J Muskiet ◽  
Willem van der Slik

Stable lyophilized ethylenediaminetetra-acetic acid (EDTA)-blood haemolysates were applied in an external quality assurance programme (SKZL, The Netherlands) for glycohaemoglobin assays in 101 laboratories using 12 methods. The mean intralaboratory day-to-day coefficient of variation (CV), calculated from the assay of 12 unidentified pairs over a period of 1 year, was 5·2% (range: 0·2–28·7). Forty-seven per cent of laboratories did not meet the criterion of CV < 5%, whereas 68% did not meet the clinically more desirable 3·3–3·6%. Linearity, as derived from the analysis of five combinations of two haemolysates with low and high glycohaemoglobin percentages over 6 months, was excellent (mean correlation coefficient 0·9953; range: 0·9188–0·9999). Analysis of two samples with high and low glycohaemoglobin percentages gave mean interlaboratory coefficients of variation of 10% for one method performed by several laboratories and 22% for all methods performed by all laboratories. It is concluded that the majority of laboratories do not meet the clinically desirable intralaboratory precision and that an unacceptably high interlaboratory precision exists.


1999 ◽  
Vol 35 ◽  
pp. S100
Author(s):  
A. Deighton ◽  
E.A. Winfield ◽  
K. Venables ◽  
E.G.A. Aird ◽  
P.J. Hoskin

1995 ◽  
Vol 1 (2) ◽  
pp. 95-99 ◽  
Author(s):  
T N Teslow ◽  
R A Gilbert ◽  
W H Grant ◽  
S Y Woo ◽  
E B Butler ◽  
...  

To investigate the use of teleradiology in the quality assurance programme of a multicentre radiotherapy practice, we installed image acquisition and display workstations at each of two affiliated radiation oncology clinics. A commercial diagnostic teleradiology system was successfully modified to suit the requirements of the radiotherapy subspecialty. The system allowed intersite transmission of images, access to high-resolution images from each site and, by use of laser film scanners, made accessible all types of radiation therapy image. Transmission speed and storage capacity were better than expected. Using the system, radiation oncology residents and staff reviewed 83 complex cases over eight months. Case presentation and discussion were enhanced. In the same period, 276 cases were reviewed by conference in person. Case conferences for quality assurance conducted with the teleradiology system influenced changes in treatment planning as effectively as those conducted in person. Equivalent treatment outcomes were produced. The teleradiology system facilitated quality assurance through review of patients' radiation treatments by allowing natural interactive consultation.


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