Preliminary test procedures and Bayesian procedures for pooling correlated data

1967 ◽  
Author(s):  
Donna Jean Brogan Ruhl
Keyword(s):  
Preliminary Test ◽  
Correlated Data ◽  
Test Procedures ◽  
Bayesian Procedures

scholarly journals Study on Canning Methods of Date (Mozafati and Karout Varieties)

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 638e-638
Author(s):  
A. Talaie ◽  
J. Seddigh
Keyword(s):  
Sugar Beet ◽  
Chemical Properties ◽  
Preliminary Test ◽  
Test Procedures ◽  
Beet Molasses ◽  
Date Syrup ◽  
Sugar Beet Molasses ◽  
Randomized Design ◽  
Control Tree ◽  
Physical And Chemical

Research was conducted in the laboratory of Horticulture Dept. of Seeds and Plants Improvement Research Inst. in Karaj to review the possibility of canning soft and nectariferous `Mozafati' and `Karout' dates from Bam and Zahedan cities. According to the existing information, there are large amounts of postharvest spoilages on this fruit because of their storage in carton boxes or other packing materials and due to a large amount of nectar. Thus, there are physical and chemical changes particularly during ripening (date), and, as a result, there is always a severe effect on the quality of the product. It seems that canning of date under proper conditions could maintain the characteristics of the proposed variety and also the physical and chemical properties of the fruit for a longer time and it could be easily transported to all parts of the world. The samples for this experiment were collected in tamer stage because there are a lot of changes in the ripening stage of these varieties, which lead to severe fruit drop. The proposed samples were randomly collected from 10 date palms. The specifications and characteristics of the collected samples were recorded after the preliminary test procedures, washing, and disinfection. In this experiment a complete randomized design with four treatments were used. The experimented factors were variety and treatment. The experimented varieties were Mozafati and Karout and the proposed treatments were control tree–date syrup, sugar syrup, sugar beet molasses, and vacuum conditions. This experiment was repeated for four times for all treatments, and the best canning method was determined. The results indicate that vacuum conditions are the best canning method for Mozafati, while canning with sugar beet molasses is the best method for Karout.

Preliminary Test Results of a Prototype of Criterion

1995 ◽  
Vol 19 (2) ◽  
pp. 65-71
Author(s):  
C. J. Liu ◽  
X. Huang ◽  
J. K. Eichenberger
Keyword(s):  
Short Distance ◽  
Preliminary Test ◽  
Survey Instrument ◽  
Test Results ◽  
Test Procedures ◽  
Height Measurement ◽  
Criterion A

Abstract The accuracy of a prototype version of Criterion, a digital tree measurement and survey instrument, has been tested for diameter and height measurement. This paper discusses the test procedures,preliminary test results, and recent improvements that have been made on this instrument. Preliminary tests found that the instrument measured diameters accurately but was very inaccurate when used to measure heights of tall objects from a short distance. In addition, Criterion was very cumbersome to use when handheld. South. J. Appl. For. 19(2):65-71.

General considerations for skin test procedures in the diagnosis of drug hypersensitivity

Allergy ◽  
2002 ◽  
Vol 57 (1) ◽  
pp. 45-51 ◽  
Author(s):  
K. Brockow ◽  
A. Romano ◽  
M. Blanca ◽  
J. Ring ◽  
W. Pichler ◽  
...  
Keyword(s):  
Skin Test ◽  
Drug Hypersensitivity ◽  
Test Procedures

Reliability of Laboratory Tests for the Control of Oral Anticoagulation

1974 ◽  
Vol 32 (02/03) ◽  
pp. 483-491
Author(s):  
E. A Loeliger ◽  
M. J Boekhout-Mussert ◽  
L. P van Halem-Visser ◽  
J. D. E Habbema ◽  
H de Jonge
Keyword(s):  
Human Brain ◽  
Laboratory Tests ◽  
Test Procedure ◽  
Rabbit Brain ◽  
Normal Range ◽  
Test Procedures ◽  
Discrimination Power ◽  
Power Of The Test ◽  
Assay Procedure ◽  
Low Sensitivity

SummaryThe present study concerned the reproducibility of the so-called prothrombin time as assessed with a series of more commonly used modifications of the Quick’s onestage assay procedure, i.e. the British comparative reagent, homemade human brain thromboplastin, Simplastin, Simplastin A, and Thrombotest. All five procedures were tested manually on pooled lyophilized normal and patients’ plasmas. In addition, Simplastin A and Thrombotest were investigated semiautomatically on individual freshly prepared patients’ plasmas. From the results obtained, the following conclusions may be drawn :The reproducibility of results obtained with manual reading on lyophilized plasmas is satisfactory for all five test procedures. For Simplastin, the reproducibility of values in the range of insufficient anticoagulation is relatively low due to the low discrimination power of the test procedure in the near-normal range (so-called low sensitivity of rabbit brain thromboplastins). The reproducibility of Thrombotest excels as a consequence of its particularly easily discerned coagulation endpoint.The reproducibility of Thrombotest, when tested on freshly prepared plasmas using Schnitger’s semiautomatic coagulometer (a fibrinometer-liJce apparatus), is no longer superior to that of Simplastin A.The constant of proportionality between the coagulation times formed with Simplastin A and Thrombotest was estimated at 0.64.Reconstituted Thrombotest is stable for 24 hours when stored at 4° C, whereas reconstituted Simplastin A is not.The Simplastin A method and Thrombotest seem to be equally sensitive to “activation” of blood coagulation upon storage.

Use of a Lyophilized Reference Plasma to Compare Coagulation Test Procedures

1975 ◽  
Vol 34 (02) ◽  
pp. 426-444 ◽  
Author(s):  
J Kahan ◽  
I Nohén
Keyword(s):  
Oral Anticoagulant Therapy ◽  
Repeated Measurements ◽  
Test Procedures ◽  
Coagulation Activity ◽  
Close Relationship ◽  
Measured Activity ◽  
Test Materials ◽  
The Difference ◽  
The Stability ◽  
The One

SummaryIn 4 collaborative trials, involving a varying number of hospital laboratories in the Stockholm area, the coagulation activity of different test materials was estimated with the one-stage prothrombin tests routinely used in the laboratories, viz. Normotest, Simplastin-A and Thrombotest. The test materials included different batches of a lyophilized reference plasma, deep-frozen specimens of diluted and undiluted normal plasmas, and fresh and deep-frozen specimens from patients on long-term oral anticoagulant therapy.Although a close relationship was found between different methods, Simplastin-A gave consistently lower values than Normotest, the difference being proportional to the estimated activity. The discrepancy was of about the same magnitude on all the test materials, and was probably due to a divergence between the manufacturers’ procedures used to set “normal percentage activity”, as well as to a varying ratio of measured activity to plasma concentration. The extent of discrepancy may vary with the batch-to-batch variation of thromboplastin reagents.The close agreement between results obtained on different test materials suggests that the investigated reference plasma could be used to calibrate the examined thromboplastin reagents, and to compare the degree of hypocoagulability estimated by the examined PIVKA-insensitive thromboplastin reagents.The assigned coagulation activity of different batches of the reference plasma agreed closely with experimentally obtained values. The stability of supplied batches was satisfactory as judged from the reproducibility of repeated measurements. The variability of test procedures was approximately the same on different test materials.

Quadratic Discriminant Analysis of Spatially Correlated Data

2001 ◽  
Vol 6 (2) ◽  
pp. 15-28 ◽  
Author(s):  
K. Dučinskas ◽  
J. Šaltytė
Keyword(s):  
Discriminant Function ◽  
Error Rate ◽  
Gaussian Random Field ◽  
Correlated Data ◽  
Covariance Matrices ◽  
Classification Rule ◽  
Spatial Correlations ◽  
Linear Quadratic ◽  
Spatial Correlation Function ◽  
Spatially Correlated

The problem of classification of the realisation of the stationary univariate Gaussian random field into one of two populations with different means and different factorised covariance matrices is considered. In such a case optimal classification rule in the sense of minimum probability of misclassification is associated with non-linear (quadratic) discriminant function. Unknown means and the covariance matrices of the feature vector components are estimated from spatially correlated training samples using the maximum likelihood approach and assuming spatial correlations to be known. Explicit formula of Bayes error rate and the first-order asymptotic expansion of the expected error rate associated with quadratic plug-in discriminant function are presented. A set of numerical calculations for the spherical spatial correlation function is performed and two different spatial sampling designs are compared.

Sign in / Sign up

Export Citation Format

Share Document