Study on the Interlaboratory Comparison Test of the Electronic Test Method for Raw Silk

2012 ◽  
Vol 241-244 ◽  
pp. 317-321
Author(s):  
Jian Mei Xu ◽  
Ying Zhou ◽  
Suo Zhuai Dong ◽  
Francesco Gatti ◽  
Dong Ping Wu ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Optical Sensor ◽  
Interlaboratory Comparison ◽  
Test Method ◽  
Multiple Comparison ◽  
International Standard ◽  
Comparison Test ◽  
Testing Method ◽  
Multiple Comparison Procedure ◽  
The Difference

To establish an international standard on the electronic testing method for raw silk, the interlaboratory comparison tests of the electronic testing method for raw silk are done. Five lots of soaked silk are sampled and tested by four machines of the same type in four labs, 13 items including the defects and evenness information of each lot of silk are measured. The analysis of variance and multiple comparison procedure are used to find whether there exist significant differences among the four machines; and the result shows that there are no significant differences among the machines in testing these items except for the item of IPMe by optical sensor. The reason for the difference is analyzed, and the measure for dismissing the difference is proposed.

Affective-Symbolic Connotations of the Rorschach Inkblots: Fact or Fantasy

1983 ◽  
Vol 56 (1) ◽  
pp. 287-295
Author(s):  
Judith D. Wallach
Keyword(s):  
Analysis Of Variance ◽  
Repeated Measures ◽  
A Priori ◽  
Multiple Comparison ◽  
Male Students ◽  
Point Scale ◽  
Comparison Test ◽  
Multiple Comparison Test ◽  
Repeated Measures Analysis ◽  
Error Terms

The Rorschach inkblots were rated for their similarity to 40 concepts by 111 female and 116 male students. A 5-point scale was used to compare the inkblots with eight concepts in each of five categories: psychoanalytic affective-symbolic connotations, an alternate set of affective-symbolic connotations, “popular” Rorschach responses, affectively toned concepts, and randomly selected nouns. A one-way repeated-measures analysis of variance for each inkblot provided the error terms for Dunn's multiple-comparison test. Although results varied considerably from inkblot to inkblot, the cards were rated over-all more similar to the derived concepts than to their traditionally assumed connotations. These findings and the results of other studies suggest that reliance on any set of hypothesized a priori meanings in Rorschach interpretation may be hazardous or, at best, premature.

Comparing treatment means correctly and appropriately

1985 ◽  
Vol 15 (6) ◽  
pp. 1142-1148 ◽  
Author(s):  
Carl W. Mize ◽  
Richard C. Schultz
Keyword(s):  
Analysis Of Variance ◽  
Multiple Comparison ◽  
Response Models ◽  
Major Treatment ◽  
The Mean ◽  
The Difference ◽  
Set Up ◽  
Multiple Comparison Procedures ◽  
Range Test ◽  
Selection Of

Many researchers set up an experiment, make measurements, do an analysis of variance, calculate the mean response for each treatment, and then try to decide if the treatment means are significantly different and why. Duncan's multiple-range test is frequently used to test the difference among treatment means. It is, however, only one of a number of techniques that can be used to examine treatment means. Some researchers are unaware of the different techniques and that the interpretation of the results of an experiment can be strongly influenced by the technique used. In fact, using an inappropriate technique can lead to making incorrect recommendations and to completely missing major treatment effects. Selection of the appropriate technique to use for a particular experiment depends upon the nature of the treatments and the objectives of the research. This paper discusses four techniques (ranking treatment means, multiple comparison procedures, fitting response models, and using contrasts to make planned comparisons) that can be used to examine treatment means and presents examples of each one.

A More Powerful Post Hoc Multiple Comparison Procedure in Analysis of Variance

1998 ◽  
Vol 23 (3) ◽  
pp. 279-289 ◽  
Author(s):  
Alan J. Klockars ◽  
Gregory R. Hancock
Keyword(s):  
Analysis Of Variance ◽  
Infinite Number ◽  
Critical Values ◽  
Multiple Comparison ◽  
Treatment Groups ◽  
Small Set ◽  
F Distribution ◽  
Multiple Comparison Procedure ◽  
Post Hoc

Scheffé’s test ( Scheffé, 1953 ), which is commonly used to conduct post hoc contrasts among k group means, is unnecessarily conservative because it guards against an infinite number of potential post hoc contrasts when only a small set would ever be of interest to a researcher. This paper identifies a set of post hoc contrasts based on subsets of the treatment groups and simulates critical values from the appropriate multivariate F-distribution to be used in place of those associated with Scheffé’s test. The proposed method and its critical values provide a uniformly more powerful post hoc procedure.

scholarly journals Effect of local anesthesia on weight gain of pre-weaning piglets submitted to castration

2017 ◽  
Vol 24 (4) ◽  
pp. 708-714
Author(s):  
Filipe Garcia Telles ◽  
Stelio Pacca Loureiro Luna ◽  
Dirlei Antonio Berto ◽  
Nadia Crosignani ◽  
Alessandro Borges Amorim
Keyword(s):  
Weight Gain ◽  
Local Anesthesia ◽  
Analysis Of Variance ◽  
Multiple Comparison ◽  
Productive Performance ◽  
Consumer Market ◽  
Pig Production ◽  
Comparison Test ◽  
Multiple Comparison Test ◽  
Weaning Piglets

The policies of welfare on animal production have been expanded to improve the animal needsand match the demands of the consumer market. Castration represents a questionable welfarefactor related to pig production. The aim of this study was to investigate the influence of theuse of local anesthesia before castration on productive performance in pre-weaning piglets,assessed by weight gain. Animals were divided into two treatments: 1) castration without localanesthesia (SURG; n = 52) and 2) castration after intra-testicular local anesthesia (SURG+LA;n = 52) when animals were three to seven days old. Piglets were weighed before (W0) and atseven (W1) and 14 days (W2) after orchiectomy, when they were weaned. Statistical analysiswas performed by one-way analysis of variance (ANOVA) followed by Student-NewmanKeuls multiple comparison test to investigate differences between groups. There were nodifferences in Weight (W2) and weight gain at weaning between SURG+LA animals comparedto SURG animals (3.57 ± 0.60 kg and 3.74 ± 0.71 kg, respectively; p = 0.17). According to theexperimental conditions of this study, local anesthesia before castration of piglets does notaffect weight gain at weaning, warranting further investigation following the effect of localanesthesia prior to castration until the slaughtering phase.

scholarly journals The application of orthogonal contrasts to determine homogeneous groups

2021 ◽  
Vol 82 ◽  
pp. 31-44
Author(s):  
Zbigniew Laudański ◽  
Dariusz Mańkowski ◽  
Leszek Sieczko ◽  
Monika Janaszek-Mańkowska
Keyword(s):  
Analysis Of Variance ◽  
Multiple Comparison ◽  
Factorial Designs ◽  
Homogeneous Groups ◽  
Orthogonal Contrasts ◽  
Multiple Comparison Procedure ◽  
Effective Use

The paper presents a modified approach to analysis of data obtained from experiments carried out according to classical factorial designs. Four examples were discussed in order to present details of proposed method. Modification of the analysis of variance presented here enables more effective use of information on how studied factors affect the means of dependent variable. The specificity of this approach is based on alternative multiple comparison procedure incorporating orthogonal contrasts to determine homogeneous groups.

scholarly journals Assessing the impact of libraries – the role of ISO 16439

2018 ◽  
Vol 119 (1/2) ◽  
pp. 87-93 ◽  
Author(s):  
Claire Creaser
Keyword(s):  
Design Methodology ◽  
International Standards ◽  
Content Type ◽  
International Standard ◽  
The World ◽  
The Difference ◽  
Library Impact ◽  
The Impact

Purpose Library impact and how to evaluate it has been debated for a number of years. While the activity – the busy-ness – of the library is now routinely measured and described, the difference the library makes is less tangible and harder to measure. Libraries in all sectors and worldwide are grappling with this issue, and the purpose of this paper is to summarise international standards available to support them. Design/methodology/approach The first international standard concerning library impact, ISO 16439 Information and documentation – methods and procedures for assessing the impact of libraries, was published in 2014 after several years in development. Findings The standard describes a range of methods for assessing library impact which have been used across the world in a variety of libraries in all sectors. Originality/value This paper summarises the key methods described in the standard, and gives references for further reading.

scholarly journals Characteristics of anteroposterior curvatures of the spine in soccer and futsal players

2017 ◽  
Vol 18 (4) ◽  
Author(s):  
Krystyna Chromik ◽  
Anna Burdukiewicz ◽  
Jadwiga Pietraszewska ◽  
Aleksandra Stachoń ◽  
Paweł Wolański ◽  
...  
Keyword(s):  
College Students ◽  
Statistical Analysis ◽  
Injury Prevention ◽  
Analysis Of Variance ◽  
Statistical Significance ◽  
Body Posture ◽  
Soccer Players ◽  
Prevention Training ◽  
The Difference ◽  
Post Hoc

AbstractPurpose. The aim of the study was to determine differences in anteroposterior spine curvatures between futsal players, soccer players, and non-training students. The results may contribute to the development of present-day knowledge of posturometry, and its implementation in training can help reduce the risk of body posture disorders in athletes. Methods. The examined group consisted of 48 athletes and 38 non-training college students. Body posture parameters were measured with the use of Posturometr-S. The normality of distribution was checked with the Shapiro-Wilk test, and the differences between the groups were measured with ANOVA and the Bonferroni post-hoc test. The level of statistical significance was set at p < 0.05. Results. The analysis of angle values revealed the widest and most similar measurements in the group of futsal players and soccer players. The analysis of variance proved statistically significant differences between the soccer players and futsal players (p = 0.003). The difference between the soccer players and non-training students was statistically significant. The highest γ angular value was measured in non-training students, followed by futsal players and soccer players. The statistical analysis revealed significant differences between the non-training students and futsal players, as well as non-training students and soccer players (p < 0.001). Conclusions. A complex assessment of athletes’ body posture is crucial in injury prevention. Training overloads may often lead to disorders of the organ of locomotion and affect the correct body posture in athletes. This, in turn, may result in pains and injuries.

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