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Wyszukujesz frazę "Test ANOVA" wg kryterium: Temat


Wyświetlanie 1-8 z 8
Tytuł:
Optimization of process parameters for composting of pulp/paper mill sludge with hazelnut kernel using a statistical method
Autorzy:
Aycan, N.
Turan, N. G.
Ozgonenel, O.
Powiązania:
https://bibliotekanauki.pl/articles/207046.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
algorithms
composting
regression analysis
ANOVA test
optimization algorithms
optimization of process parameters
algorytmy
kompostowanie
analiza regresji
Test ANOVA
algorytmy optymalizacji
optymalizacja parametrów technologicznych
Opis:
An effective way to remove ammonium from compost using hazelnut kernels (HK) has been presented. The role of experimental factors on the removal of ammonium was examined by using the full factor experimental design (FFED). The experimental factors and their related levels were selected as time of 1-6 weeks, moisture of 50-70%, and HK amendment ratio of 5-25. The results were then evaluated by the ANOVA test to examine importance of the process variables (inputs) and their levels. A regression model taking into account main significant and interaction effects was suggested. According to the optimization algorithm, time of 5 weeks, moisture of 50%, and HK amendment ratio of 25 with the removal capacity of 60% were selected as optimum levels. The proposed analyzing procedure is simple to implement and cost-effective.
Źródło:
Environment Protection Engineering; 2014, 40, 1; 127-138
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal Ensemble Learning Based on Distinctive Feature Selection by Univariate ANOVA-F Statistics for IDS
Autorzy:
Shakeela, Shaikh
Sai Shankar, N.
Mohan Reddy, P.
Kavya Tulasi, T.
Mahesh Koneru, M.
Powiązania:
https://bibliotekanauki.pl/articles/1844624.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ANOVA-F test
cross validation
decision trees
features
NSL-KDD
data set
Opis:
Cyber-attacks are increasing day by day. The generation of data by the population of the world is immensely escalated. The advancements in technology, are intern leading to more chances of vulnerabilities to individual’s personal data. Across the world it became a very big challenge to bring down the threats to data security. These threats are not only targeting the user data and also destroying the whole network infrastructure in the local or global level, the attacks could be hardware or software. Central objective of this paper is to design an intrusion detection system using ensemble learning specifically Decision Trees with distinctive feature selection univariate ANOVA-F test. Decision Trees has been the most popular among ensemble learning methods and it also outperforms among the other classification algorithm in various aspects. With the essence of different feature selection techniques, the performance found to be increased more, and the detection outcome will be less prone to false classification. Analysis of Variance (ANOVA) with F-statistics computations could be a reasonable criterion to choose distinctives features in the given network traffic data. The mentioned technique is applied and tested on NSL KDD network dataset. Various performance measures like accuracy, precision, F-score and Cross Validation curve have drawn to justify the ability of the method.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 2; 267-275
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatio-temporal decay 'hot spots' of stranded wrack in a Baltic sandy coastal system. Part I. Comparative study of the pattern: 1 type of wrack vs 3 beach sites
Autorzy:
Jedrzejczak, M F
Powiązania:
https://bibliotekanauki.pl/articles/48627.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
sediment composition
Zostera marina
sandy beach
coastal system
salinity
litter bag
Gdansk Gulf
decomposition
ANOVA test
Opis:
The significance of distance along the beach-dune transect and different moisture conditions as regards the decay of Zostera marina leaf litter was investigated in simple field experiments in three temperate, medium- to fine-quartz-sediment, sandy beaches of the Gulf of Gdańsk in Poland. 1800 replicate litterbags of freshly stranded Zostera marina leaves were placed in beach sediments at different strata and levels on each of the beaches. The litterbags were sampled after 5, 10, 50, 100 and 150 days in the field and the remaining material was then dried and weighed. Under similar conditions of sediment composition, salinity and wave inundation, ANOVA tests revealed significant differences in breakdown through time and site. Thus there were some differences in the decay process between the low and high beach. In the former, degradation proceeded rapidly in the initial stages and then stabilised, while in the latter it remained linear throughout the study period.Matter loss in each stratum was also seasonally dependent. This may, however, be more closely linked to successional changes in the chemistry and/or microflora of the beach wrack than to its physical breakdown. Differences between organic matter degradation in the high and low beaches may be explained by differences in the moisture regime and nutrient status, and not by differences in the decay processes themselves. Therefore, two decay centres were found in the beach-dune system: the low beach together with the strandline (wrack consumption 12–21 % day−1 in the warm season, and 4–10 % day−1 in the cold season) and the dune (active consumption 2–6 % day−1 in the warm season only).
Źródło:
Oceanologia; 2002, 44, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Ring Spun Yarn Wickability Using the Post-Hoc Test
Autorzy:
Elkateb, Sherien N.
Powiązania:
https://bibliotekanauki.pl/articles/24200942.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
wickability
ring spun yarn
ANOVA
Post hoc test
Bonferroni alpha
Opis:
Yarn wickability achieves high thermo-physiological comfort. Therefore, this paper aimed to investigate yarn wickability and analyze statistically factors affecting yarn wicking performance. Methodology consists of testing wicking height for ring spun yarn produced from three levels of fibre types and twist factors at two levels of doubling. Statistical tools such as ANOVA, T-test and Post-hoc tests analyzed the impacts on wicking heights. Findings showed that the Post-hoc test represented the variation between groups more accurately than ANOVA. Furthermore, a comparison of Bonferroni Alpha with T-test p-values revealed that yarn wicking was significantly affected by interactions of fibre type, doubling, and twist level.
Źródło:
Fibres & Textiles in Eastern Europe; 2023, 31, 1; 78--82
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical Assessment of the Impact of Elevated Contents of Cu and Ni on the Properties of Austempered Ductile Iron
Autorzy:
Nawrocki, P.
Kochański, A.
Myszka, D.
Powiązania:
https://bibliotekanauki.pl/articles/352744.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
austempered ductile iron
statistical analysis
analysis of variance (ANOVA)
Grubbs Test
Statistica
Opis:
The article presents a statistical analysis of data collected from the observation of the production of austempered ductile iron. The impact assessment of the chemical composition, i.e. high contents of Cu and Ni on the properties of ductile iron isothermal tempered is critical to find the right chemical composition of austempered ductile iron. Based on the analyses range of the percentage of Cu and Ni which were selected in the cast iron to obtain material with high strength properties.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 4; 2147-2150
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Impact of Preschool Education Experience on Multidimensional Non-Cognitive Abilities and Personality Development of Adolescents
Autorzy:
Zhang, Guohui
Chayanuvata, Anchalee
Powiązania:
https://bibliotekanauki.pl/articles/2191740.pdf
Data publikacji:
2023-03-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
preschool education
non-cognitive skills
personality development
analysis of variance (ANOVA)
student’s t-test
Opis:
The topic’s relevance is based on solving the problems of the influence of preschool education experience on the multidimensional non-cognitive abilities and personality development of adolescents. The purpose of the article was to analyse the problems of the formation of multidimensional non-cognitive processes, substantiating and determining the non-cognitive abilities of preschool children: highly developed personality, giftedness, intelligence, soft skills and conducting an experiment using the basic survey of the 2013-2014 school years conducted by the Chinese Expert Research on Education (CEPS) at Renmin University (China). The methodological approach of the research was based on the methods of analysis, synthesis, comparison, generalisation of literary sources on the problem of researching the formation of multidimensional non-cognitive abilities, graphic methods for visual illustration and comparison of the results of the ascertaining and formative stages of the research. The content of the main concepts of “abilities” and “non-cognitive abilities” is determined, and their features and features are revealed. The identified non-cognitive abilities and their indicators, as well as the methods of their formation, can be used as methodical material for universities and for the personal development of individual preschool education specialists in near and far foreign countries.
Źródło:
The New Educational Review; 2023, 71; 101-113
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Właściwości wytrzymałościowe betonów wysokowartościowych z kruszywem węglanowym
Strength properties of high-performance concretes with carbonate coarse aggregate
Autorzy:
Góra, J.
Powiązania:
https://bibliotekanauki.pl/articles/390344.pdf
Data publikacji:
2011
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
beton wysokowartościowy
kruszywo łamane węglanowe
wytrzymałość na ściskanie
wytrzymałość na rozciąganie
jednoczynnikowa analiza wariancji
test NIR
high performance concrete
carbonate crushed aggregate
compressive strength
tensile strength
one-way ANOVA
LSD test
Opis:
W artykule przedstawiono wyniki badań własnych dotyczących właściwości wytrzymałościowych betonów wysokowartościowych z trzech kruszyw grubych (bazaltowego, granitowego i węglanowego). Wszystkie wyniki poddano analizie statystycznej. Istotnie wyższą wytrzymałość na rozciąganie przy rozłupywaniu stwierdzono w przypadku betonu wysokowartościowego z kruszywem dolomitowym w porównaniu do wytrzymałości betonów z kruszywem bazaltowym oraz granitowym. W przypadku wytrzymałości BWW na ściskanie odnotowano korzystniejszy wpływ kruszywa węglanowego niż granitowego.
High performance concretes were tested to find an effect of the three different coarse aggregates (basalt, granite and dolomite) on concrete strength properties. All the results were analyzed statistically. Splitting tensile strength of high performance concrete with dolomite aggregate was significantly higher than that of concretes with basalt and granite aggregate. The effect of dolomite aggregate on compressive strength of HPC was much more advantageous than that of granite aggregate.
Źródło:
Budownictwo i Architektura; 2011, 9, 2; 69-76
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Odkształcalność doraźna betonów wysokowartościowych z kruszywami łamanymi
Instantaneous deformability of high performance concretes with crushed aggregates
Autorzy:
Góra, J.
Powiązania:
https://bibliotekanauki.pl/articles/390294.pdf
Data publikacji:
2011
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
beton wysokowartościowy
kruszywo łamane
zależność σc-εc
moduł sprężystości
współczynnik Poissona
odkształcenie graniczne �Ăc1 przy maksymalnym naprężeniu
jednoczynnikowa analiza wariancji
test NIR
high performance concrete
crushed aggregate
relation ó - ĺ
modulus of elasticity
Poisson’s ratio
limiting strain ĺc1 at the highest compressive stress
one-way ANOVA
LSD test
Opis:
W artykule przedstawiono wyniki badań betonów wysokowartościowych o wartości w/c wynoszącej 0,28. Badano odkształcalność doraźną betonów w zakresie modułu sprężystości, współczynnika Poisson’a oraz odkształcenia granicznego przy maksymalnym naprężeniu. Czynnikiem zmiennym w badaniach było rodzaj kruszywa grubego: grys bazaltowy, dolomitowy i granitowy. Wyniki badań poddano testom statystycznym – jednoczynnikowej analizie wariancji i testowi najmniejszej istotnej różnicy. Stwierdzono istotny wpływ rodzaju kruszywa grubego na badane cechy odkształceniowe betonów wysokowartościowych.
The test results presented concern high performance concretes of the w/c ratio 0,28. There have been examined the modulus of elasticity, Poisson’s ratio and limiting strain at the highest compressive stress. The variable factor in the studies is the type of coarse aggregate: crushed basalt, dolomite and granite. The results of the research have been tested statistically – the one-way ANOVA and the LSD test. There is stated the significant influence of aggregate on the tested deformation properties of high performance concretes.
Źródło:
Budownictwo i Architektura; 2011, 9, 2; 77-85
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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