Gotowe bibliografie tematyczne / MTMM

Gotowa bibliografia na temat „MTMM”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 20 lutego 2023

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Artykuły w czasopismach na temat "MTMM"

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Hamdani, Maria Riaz, Sorin Valcea i Michael Ronald Buckley. "The MTMM matrix approach: implications for HRM research". Personnel Review 45, nr 6 (5.09.2016): 1156–75. http://dx.doi.org/10.1108/pr-12-2014-0278.

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Purpose The purpose of this paper is to focus on the suitability of the multitrait-multimethod (MTMM) matrix approach for examining construct validity in human resource management (HRM) research. The authors also provide a number of suggestions on how to use MTMM more effectively in HRM research. Design/methodology/approach The authors start by presenting a basic introduction to MTMM approach. Next the authors briefly review the limitations of MTMM approach and suggested improvements. The authors elaborate on these limitations by providing HRM examples. To further illustrate these issues, the authors review employment interview research. Findings The construct validity analysis in HRM research suffers from three problematic assumptions of the classical MTMM approach: uncorrelated trait-method units, uncorrelated methods, and uncorrelated traits. The review of interview research shows that classical MTMM approach is by far the most popular approach given its relative simplicity and modest sample size requirements. This popularity stresses the significance of the review in highlighting these issues. Originality/value Several improvements to quantify the interpretations of MTMM analysis are available to researchers. This review closely examines how these limitations and proposed improvements influence HRM research, thereby making the methodological advances concerning the MTMM approach more accessible to HRM researchers and practitioners.
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Höfling, Volkmar, Karin Schermelleh-Engel i Helfried Moosbrugger. "Analyzing Multitrait-Multimethod Data". Methodology 5, nr 3 (styczeń 2009): 99–111. http://dx.doi.org/10.1027/1614-2241.5.3.99.

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Assessing construct validity is a core task in psychology. Since Campbell and Fiske’s (1959) seminal article on multitrait-multimethod (MTMM) analysis, several different methodological approaches for the analysis of convergent and discriminant validity of MTMM data have been developed. In this article, two MTMM approaches are transferred to the general framework of confirmatory factor analysis and compared with the extended version of the correlated trait-correlated method minus one model ( Nussbeck, Eid, Geiser, Courvoisier, & Lischetzke, 2009 ): The multilevel MTMM model ( Maas, Lensvelt-Mulders, & Hox, 2009 ) and the three-mode model ( Oort, 2009 ). Assessing the construct validity of a German Big Five MTMM data set these three MTMM approaches are compared with regard to convergent and discriminant validity estimates and with regard to method effects. Advantages and limitations of each methodological approach will be discussed in detail.
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Liao, Pei-shan, Willem E. Saris i Diana Zavala-Rojas. "Cross-National Comparison of Equivalence and Measurement Quality of Response Scales in Denmark and Taiwan". Journal of Official Statistics 35, nr 1 (1.03.2019): 117–35. http://dx.doi.org/10.2478/jos-2019-0006.

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Abstract The split-ballot multitrait-multimethod (SB-MTMM) approach has been used to evaluate the measurement quality of questions in survey research. It aims to reduce the response burden of the classic MTMM design, which requires repeating alternative formulations of a survey measure to the same respondent at least three times, by using combinations of two methods in multiple groups. The SB-MTMM approach has been applied to the European Social Survey (ESS) to examine the quality of questions across countries, including the differences in response design and measurement errors. Despite wide application of the SB-MTMM design in Europe, it is yet unknown whether the same quality of survey instruments can be achieved in both a different cultural context and in a logographic writing system, like the one in Taiwan. This study tests for measurement invariance and compares measurement quality in Taiwan and Denmark, by estimating the reliability and validity of different response scales using the SB-MTMM approach. By using the same questions as in the ESS, a cross-cultural comparison is made, in order to understand whether the studied response scales perform equally well in Taiwan, compared to a European country. Results show that quality estimates are comparable across countries.
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Cudeck, Robert. "Msultiplicative Models and MTMM Matrices". Journal of Educational Statistics 13, nr 2 (czerwiec 1988): 131–47. http://dx.doi.org/10.3102/10769986013002131.

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The rationale for multiplicative models in the context of MTMM covariance matrices, as developed by Swain and Browne, is described and illustrated with several sets of empirical data. Comparisons with restricted factor analysis models are made, and certain criticisms of this approach are noted. An extension of the multiplicative model to three-facet data that includes occasions, methods, and traits is also presented.
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Cudeck, Robert. "Multiplicative Models and MTMM Matrices". Journal of Educational Statistics 13, nr 2 (1988): 131. http://dx.doi.org/10.2307/1164750.

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Maas, Cora J. M., Gerty J. L. M. Lensvelt-Mulders i Joop J. Hox. "A Multilevel Multitrait-Multimethod Analysis". Methodology 5, nr 3 (styczeń 2009): 72–77. http://dx.doi.org/10.1027/1614-2241.5.3.72.

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The classical multitrait-multimethod (MTMM) matrix can be viewed as a two-dimensional cross-classification of traits and methods. Beside commonly used analysis methods such as structural equation modeling and generalizability theory, multilevel analysis offers attractive possibilities. If the focus is only on analyzing classical MTMM data, the multilevel approach has no surplus value, because the resulting model is equivalent to a confirmatory factor model with additional restrictions imposed by the multilevel parameterization. However, if the data contain further complexities, such as additional information on the traits or persons, multilevel analysis of MTMM data offers a flexible analysis tool with more possibilities than the other approaches.
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Oort, Frans J. "Three-Mode Models for Multitrait-Multimethod Data". Methodology 5, nr 3 (styczeń 2009): 78–87. http://dx.doi.org/10.1027/1614-2241.5.3.78.

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Multitrait-multimethod (MTMM) data are characterized by three modes: traits, methods, and subjects. Considering subjects as random, and traits and methods as fixed, stochastic three-mode models can be used to analyze MTMM covariance data. Stochastic three-mode models can be written as linear latent variable models with direct product (DP) restrictions on the parameter matrices ( Oort, 1999 ), yielding three-mode factor models ( Bentler & Lee, 1979 ) and composite direct product models ( Browne, 1984 ) as special cases. DP restrictions on factor loadings and factor correlations facilitate interpretation of the results and enable easy evaluation of the validity requirements of MTMM correlations ( Campbell & Fiske, 1959 ). As an illustrative example, a series of stochastic three-mode models has been fitted to data of three personality traits of 482 students, measured with 12 items, through three methods.
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Kumar, Ajith, i William R. Dillon. "An Integrative Look at the Use of Additive and Multiplicative Covariance Structure Models in the Analysis of MTMM Data". Journal of Marketing Research 29, nr 1 (luty 1992): 51–64. http://dx.doi.org/10.1177/002224379202900105.

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First-order confirmatory factor analytic models have had widespread use in the analysis of multitrait-multimethod (MTMM) data. In contrast to the usual first-order confirmatory factor analytic model for the analysis of MTMM data, other covariance structure models have recently been proposed and advocated. Two such models are Wothke's covariance component analysis model and Browne's direct product model. The authors provide a conceptual and analytic discussion of those alternative procedures and compare them with the conventional first-order confirmatory factor analytic model. They consider the relationship between method factors and trait factors assumed under each model specification. General remarks about the nature of method factors and the likely reasons for lack of fit and ill-defined solutions frequently encountered with use of first-order factor models are presented. The authors also attempt to integrate the various approaches to modeling MTMM data and in so doing provide some perspective on selection of a particular covariance structure model for use in applied research.
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Yamada, H., i T. Nishijima. "VALIDITY OF POWER TESTS BY MTMM MODEL". Medicine & Science in Sports & Exercise 35, Supplement 1 (maj 2003): S194. http://dx.doi.org/10.1097/00005768-200305001-01084.

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Krüger, Claudia, Jens Rowold, Lars Borgmann, Kathrin Staufenbiel i Kathrin Heinitz. "The Discriminant Validity of Transformational and Transactional Leadership". Journal of Personnel Psychology 10, nr 2 (styczeń 2011): 49–60. http://dx.doi.org/10.1027/1866-5888/a000032.

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The well known constructs of transformational and transactional leadership are still facing problems concerning their discriminant validity as substantive correlations have frequently been observed between them. Nine samples, including 178 supervisors and their 834 followers, completed the German version of the Transformational Leadership Inventory (TLI). Self-ratings and aggregated observer ratings were analyzed using a SEM-based multitrait-multimethod (MTMM) approach. First, the factorial structure was confirmed for both rating perspectives and across them. In the MTMM analysis, controlling for the method effects reduced the correlations between leadership constructs from a high to a small resp. medium level and the leadership scales can be discriminated. Facilitating the use of the TLI in practical issues, norms are provided for self and observer ratings.
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Rozprawy doktorskie na temat "MTMM"

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Ljung, Björn. "Korrigering för slumpfel och metodeffekter i sambandsanalys av enkätdata med SQP 2.0". Thesis, Uppsala universitet, Statistiska institutionen, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-198883.

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Sambandsanalys av surveydata kompliceras av förekomsten av slumpfel och metodeffekter i de avgivna svaren. Dessa felkällor kan leda till betydande över- eller underskattning av sambanden mellan undersökta variabler, och riskerar att leda till felaktiga slutsatser. En sedan länge känd metod för att estimera och kontrollera för slumpfel och metodeffekter i enkätdata är den så kallade Multitrait Multimethod-metoden (MTMM). Nackdelen med MTMM-metoden är att den kräver att varje fråga som ska analyseras ställs minst tre gånger i samma enkät, vilket gör att ansatsen i praktiken oftast inte är möjlig att tillämpa. Sedan 2012 finns dock ett verktyg, SQP 2.0, som gör det möjligt att skatta slumpfel och metodeffekter i enkätdata utan att genomföra MTMM-experiment. Den här uppsatsen utvärderar prediktionerna från SQP 2.0 på en enkät om arbetslivsrelaterade frågor besvarad av svenska och brittiska respondenter. Programvarans prediktioner jämförs med resultat från MTMM-experiment, och effekten på sambandsanalysen av att tillämpa SQP-programvarans prediktioner av slumpfel och metodeffekter studeras. Slutsatserna från studien är att SQP 2.0 ger predicerade värden för slumpfel och metod-effekter som ligger nära de MTMM-estimerade i de flesta fall, men att betydande avvikelser också förekommer. Vidare konstateras att korrigering för slumpfel och metodeffekter har en betydande effekt på absolutvärdet av korrelationerna mellan variabler under de studerande förhållandena: korrelationerna i det studerade fallet ökar kraftigt efter justering. Korrelationernas relativa storlek förändras i mindre utsträckning, men för en enkät med mer varierade frågetyper kan också dessa påverkas kraftigt.
Correlation analysis of survey data is complicated by the presence of random errors and method effects in the answers given. These factors can lead to significant over- or underestimation of the correlations between variables. A well-established method for estimating and controlling for random error and method effects in survey data is the Multitrait-Multimethod (MTMM) approach. The disadvantage of this method is that it requires that each survey item to be analysed is asked multiple times in the same survey, making the approach hard to use in many practical situations. Since 2012 there is a tool available, SQP 2.0, to predict random errors and method effects in survey data without performing MTMM experiments. This paper evaluates the use of predictions from the SQP 2.0 software on the correlation analysis of a survey of work related matters answered by Swedish and British respondents. The software's predictions are compared with results from MTMM experiments, and the effect on the correlations of applying the SQP software's predictions of random errors and method effects are studied. The conclusion of the study is that SQP 2.0 gives predicted values for random error and method effects that are close to the MTMM-estimates in most cases, but that considerable deviations also occur. It is further concluded that controlling for random error and method effects has a significant effect on the absolute values of the correlations between variables in the studied cases: the correlations in the study increase substantially after adjustment. The relative sizes of the correlations between variables change to a lesser extent, but a questionnaire with more varied question types may have lead to different results in this respect.
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Jones, Catherine Toni, i n/a. "Biggs's 3P Model of Learning: The Role of Personal Characteristics and Environmental Influences on Approaches to Learning". Griffith University. School of Applied Psychology, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030304.092316.

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The aim of this research programme was to examine the 3P model of learning (Biggs, 1987a, 1999). The first stage necessarily involved an examination of the Study Process Questionnaire (SPQ) (Biggs, 1987a), an instrument developed to measure the process component of the model. The structure of the SPQ was examined utilising exploratory and confirmatory factor analysis of undergraduate responses (n= 260). The results indicated the higher-order factor structure of deep-achieving and surface-achieving-motive provided the most reliability and a better model fit than either the subscales or scales of the SPQ. The construct validity of the two constructs deep and surface was assessed next using a multitrait-multimethod matrix (MTMM) constructed from the three measures of the self-report questionnaire, interview ratings and written assessments from first-year students (n = 50). The results indicated good convergent validity between the deep scale of the SPQ and the interview ratings on the deep scale, between the deep scale on the SPQ and the written assessment ratings, and between the interview ratings and written assessment ratings. The results indicated good convergent validity between the surface scale on the SPQ and the interview ratings on the surface scale, but not between the surface scale on the SPQ and the written assessment ratings, and between the interview ratings and written assessment ratings. The discriminant validity between deep and surface was good for the SPQ, but not for either the interview or the written assessment. The findings indicate the deep and surface scales of the SPQ adequately measure the underlying deep and surface constructs. The retest reliability of the SPQ was then examined utilising Spearman’s Rho to assess the rank-order correlations with a sample of third-year students (n=87). Over a period of three months there were significant correlations for the surface motive, surface strategy, deep strategy, achieving motive and achieving strategy subscales of the SPQ, suggesting good reliability for these subscales. The results at the scale level of the SPQ result in similar conclusions. There was a moderate significant correlation for the surface, deep and achieving scales of the SPQ, suggesting the scales have good reliability over a period of three months. There was also a moderate significant correlation for the surface-achieving-motive and deep-achieving scales over a period of three months. The stability of SPQ scores was also assessed utilising a series of one-way repeated measures MANOVA’s with a sample of third-year undergraduates (n = 64). The results suggest some change occurs in self-reported use of approaches to learning between the first and third-years of an undergraduate degree programme. The role of the teaching-learning environment was next examined. Utilising a within-subjects design, undergraduate students (n=48) concurrently enrolled in traditional (viz. lecture and tutorial) and non-traditional (viz. workshops and group projects) subjects completed the SPQ to describe their approaches to learning in each subject. A series of 2x2 repeated measures MANOVA’s were undertaken. The results indicated students were likely to change their approach to learning based on their perceptions of the learning environment (traditional or non-traditional subject). However, those students identified as predominantly surface learners significantly increased their deep scale scores in the non-traditional subject when compared to deep learners. The next study examined a range of personality (locus of control, sensing function, thinking function, intelligence) and demographic variables (age, gender, year of study) to assess which were good predictors of deep and surface approaches to learning. A series of regression analyses identified age, sensing function and locus of control as significant predictors of the surface, surface-achieving-motive, and deep approaches to learning. Locus of control was found to be a significant predictor of the deep-achieving approach to learning. The final study examined the 3P model of learning. Based on the results of earlier studies in the research programme the situational component of the presage factors was not included. The model was examined using structural equation modelling (n= 394). Two initial models were tested using both the three (deep, surface, achieving) and two (surface-achieving-motive and deep-achieving) process factor models. The three process factor model provided the better model fit. The results suggest deep and surface approaches to learning do not mediate between personal characteristics and learning outcomes (i.e. GPA). The results of this series of studies suggest the need for further research into the SPQ and the 3P model of learning. The implications of the research programme are also discussed.
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Jones, Catherine Toni. "Biggs's 3P Model of Learning: The Role of Personal Characteristics and Environmental Influences on Approaches to Learning". Thesis, Griffith University, 2003. http://hdl.handle.net/10072/366357.

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The aim of this research programme was to examine the 3P model of learning (Biggs, 1987a, 1999). The first stage necessarily involved an examination of the Study Process Questionnaire (SPQ) (Biggs, 1987a), an instrument developed to measure the process component of the model. The structure of the SPQ was examined utilising exploratory and confirmatory factor analysis of undergraduate responses (n= 260). The results indicated the higher-order factor structure of deep-achieving and surface-achieving-motive provided the most reliability and a better model fit than either the subscales or scales of the SPQ. The construct validity of the two constructs deep and surface was assessed next using a multitrait-multimethod matrix (MTMM) constructed from the three measures of the self-report questionnaire, interview ratings and written assessments from first-year students (n = 50). The results indicated good convergent validity between the deep scale of the SPQ and the interview ratings on the deep scale, between the deep scale on the SPQ and the written assessment ratings, and between the interview ratings and written assessment ratings. The results indicated good convergent validity between the surface scale on the SPQ and the interview ratings on the surface scale, but not between the surface scale on the SPQ and the written assessment ratings, and between the interview ratings and written assessment ratings. The discriminant validity between deep and surface was good for the SPQ, but not for either the interview or the written assessment. The findings indicate the deep and surface scales of the SPQ adequately measure the underlying deep and surface constructs. The retest reliability of the SPQ was then examined utilising Spearman’s Rho to assess the rank-order correlations with a sample of third-year students (n=87). Over a period of three months there were significant correlations for the surface motive, surface strategy, deep strategy, achieving motive and achieving strategy subscales of the SPQ, suggesting good reliability for these subscales. The results at the scale level of the SPQ result in similar conclusions. There was a moderate significant correlation for the surface, deep and achieving scales of the SPQ, suggesting the scales have good reliability over a period of three months. There was also a moderate significant correlation for the surface-achieving-motive and deep-achieving scales over a period of three months. The stability of SPQ scores was also assessed utilising a series of one-way repeated measures MANOVA’s with a sample of third-year undergraduates (n = 64). The results suggest some change occurs in self-reported use of approaches to learning between the first and third-years of an undergraduate degree programme. The role of the teaching-learning environment was next examined. Utilising a within-subjects design, undergraduate students (n=48) concurrently enrolled in traditional (viz. lecture and tutorial) and non-traditional (viz. workshops and group projects) subjects completed the SPQ to describe their approaches to learning in each subject. A series of 2x2 repeated measures MANOVA’s were undertaken. The results indicated students were likely to change their approach to learning based on their perceptions of the learning environment (traditional or non-traditional subject). However, those students identified as predominantly surface learners significantly increased their deep scale scores in the non-traditional subject when compared to deep learners. The next study examined a range of personality (locus of control, sensing function, thinking function, intelligence) and demographic variables (age, gender, year of study) to assess which were good predictors of deep and surface approaches to learning. A series of regression analyses identified age, sensing function and locus of control as significant predictors of the surface, surface-achieving-motive, and deep approaches to learning. Locus of control was found to be a significant predictor of the deep-achieving approach to learning. The final study examined the 3P model of learning. Based on the results of earlier studies in the research programme the situational component of the presage factors was not included. The model was examined using structural equation modelling (n= 394). Two initial models were tested using both the three (deep, surface, achieving) and two (surface-achieving-motive and deep-achieving) process factor models. The three process factor model provided the better model fit. The results suggest deep and surface approaches to learning do not mediate between personal characteristics and learning outcomes (i.e. GPA). The results of this series of studies suggest the need for further research into the SPQ and the 3P model of learning. The implications of the research programme are also discussed.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Applied Psychology
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Jain, Rinku. "Insights into the roles of metals in biology: biochemical and structural characterization of two bacterial and one archaeak metallo-enzyme". The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1154819208.

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Danay, Erik. "Predictors of performance". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2011. http://dx.doi.org/10.18452/16303.

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Präsentiert werden drei Studien zum Thema Prädiktion von Leistung. In Studie 1 wurde die Prädiktion von Studienerfolg nicht nur mit Persönlichkeitsmaßen auf Facettenebene sowohl von Fremd- als auch Selbst-Ratings untersucht, sondern auch der Einfluss von faking auf die Kriteriumsvalidität. Ergebnisse zeigten, dass Fremd- über Selbst-Ratings und Intelligenz hinaus Studienerfolg prädizieren. Auch wurde gezeigt, dass Faking die Kriteriumsvaliditäten auf Facettenebene in unterschiedlicher Weise beeinflusst. Studie 2 untersuchte den Einfluss der unterschiedlichen Abstraktionsebene von Prädiktor und Kriterium auf die Kriteriumsvalidität. Dazu wurden Leistungsmotivationsskalen sowohl in einer Mathe-spezifischen Formulierung als auch in einer globalen Formulierung Schülern vorgegeben. Diese Skalen dienten dann als Prädiktoren für Noten in Mathe, Physik und Deutsch. Ergebnisse einer Varianzzerlegung mit MTMM zeigten, dass die Mathe-spezifischen Skalen durchgehend ein Plus an Varianz enthalten, welches unabhängig ist von der Varianz aufgrund der einzelnen Motivationskonstrukte. Folglich messen domänen-spezifische Skalen entweder ein engeres Konstrukt von Leistungsmotivation oder, eher, ein zusätzliches Konstrukt. Das Korrelationsmuster der domänen-spezifischen Varianz mit den drei untersuchten Noten legt nahe, dass es sich bei diesem zusätzlichen Konstrukt um Selbstkonzept handelt. Studie 3 untersuchte die Konstruktvalidität der Big 5 und möglicher higher-order factors nach Kontrolle von möglichen Biases innerhalb des CTCM-1 Ansatzes mit Selbst- und Fremdratings. Ergebnisse zeigten, dass bias-bereinigte Big 5 Maße die Annahme eines higher-order factors wenig plausibel machen. Darüber hinaus konnte ein solcher potentieller Faktor nicht theoriekonform die positive Eigenschaft Intelligenz prädizieren. Insgesamt verdeutlicht dies die Problematik des Einflusses von unterschiedlichen Quellen und Verzerrungen auf die Kriteriumsvalidität von häufig eingesetzten Persönlichkeitsmaßen.
Presented are 3 studies about the prediction of performance. Study 1 analyzes the prediction of academic performance by use of self-ratings, other-ratings and faked-ratings of personality measures not only on domain level but also on facet level. Result showed that other-ratings yield incremental validity above and beyond self-ratings and intelligence. Moreover, against prior findings for domain-level, faking does influence criterion validity on facet-level, with the influence not being uniform in direction. Study 2 analyzed the influence of different levels of abstraction of predictor and criterion in the realm of achievement motivation. For that, various achievement motivation scales were administered both in a global and a math-specific wording. These scales later on served as predictor for grades in math, physics and German. By modeling this data in a MTMM model different sources of variance could be disentangled. Results showed that math-specific scales are the better predictors. More so, these domain-specific scales have uniformly an increase in variance regardless of the positive or negative valence of the various achievement motivation scales. This leads to the conclusion that math-domain-specific scales either measure a narrower construct or, more probable, they tap an additional construct. This is backed by the uniform positive additional variance. Moreover, test-criterion correlation-pattern between the math-domain-specific variance and the three different grades makes it plausible that the additional construct tapped in these scales is self-concept. Study 3 analyzed the construct-validity of personality’s Big 5 and their possible higher order factor after controlling for singular rater biases using a newly developed CTCM-1 approach. Results showed that these bias free Big 5 make the assumption of one higher order factor implausible. Moreover, such a factor would not uniformly predict intelligence as is claimed by advocates of this factor.
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Saguet, Pierre. "Analyse des milieux guides la méthode MTLM". Grenoble : ANRT, 1985. http://catalogue.bnf.fr/ark:/12148/cb37595152s.

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Oliveira, Solon Pereira de. "Aplicação do metodo MTM em linha de montagem de trocadores de calor veicular". [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264212.

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Orientador: Anselmo Eduardo Diniz
Dissertação (mestrado profissional) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
Made available in DSpace on 2018-08-06T20:02:45Z (GMT). No. of bitstreams: 1 Oliveira_SolonPereirade_M.pdf: 5699180 bytes, checksum: 067ac02eef0cae10532e8027dc26ebc5 (MD5) Previous issue date: 2006
Resumo: Nesse trabalho procurou-se aplicar o método MTM AI ou método básico para otimizar e balancear os postos de trabalhos dedicados ao módulo de arrefecimento do veículo de passeio, carro que a montadora está lançando em 2005 para competir com os rivais no seu próprio mercado. Os postos de trabalhos foram filmados para registrar os métodos (o método determina o tempo) empregados atualmente e para servir de base para as análises MTM AI onde foi aplicada a otimização dos métodos. Após esse levantamento os dados são introduzidos no software Ticon 2.1, para geração de relatórios e triagem dos mo~entos que agregam / não agregam valor, juntamente com avaliação da necessidade e dificuldade dos movimentos aplicados. Após a análise foi feita uma proposta para substituir ou facilitar os movimentos que geraram os maiores TMU's (Unidade de Medida de Tempo) sugerindo novos movimentos, novas distâncias um novo método em relação ao movimento original, assim como o balanceamento dos postos de trabalho otimizando o tempo de ciclo dos operadores da célula sem aumentar o ciclo de processo
Abstract: In this work it was looked to apply method MTM AI or basic method to optimize and to balance the work station dedicated to the cooling module of Vehicle. The Car Assembly Company is launching this ear in Oct 2005 to compete with the Japanese rivals in its proper market. The work station had been tilmed to register the methods (the method determines the time) employed currently and to serve as base for MTM AI analyses where the optimization ofthe methods was applied. After this survey the data were introdueed in software Tieon 2,1, for generation of reports and selection of the movements that add/do not add value, together with evaluation ofthe necessity and difficulty of the applied movements. After the analysis was made a proposal to substitute or to facilitate the movements that had generated the highest TMUs (Unit of Measure of Time) suggesting new movements, new distances a new method in relation to the original movement, as well as the balaneing of the work station optimizing the time of cycle of the operators of the cell without increasing the process eyele
Mestrado
Planejamento e Gestão Estrategica da Manufatura
Mestre Profissional em Engenharia Mecanica
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Gerbeth, Gunter, i Sven Eckert. "International Workshop on Measuring Techniques for Liquid Metal Flows (MTLM), Rossendorf, 11.-13.10.99, Proceedings: International Workshop on Measuring Techniques for Liquid Metal Flows (MTLM), Rossendorf, 11.-13.10.99, Proceedings". Forschungszentrum Rossendorf, 1999. https://hzdr.qucosa.de/id/qucosa%3A21841.

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The International Workshop on "Measuring Techniques in Liquid Metal Flows" (MTLM Workshop) was organised in frame of the Dresden "Innovationskolleg Magnetofluiddynamik". The subject of the MTLM Workshop was limited to methods to determine physical flow quantities such as velocity, pressure, void fraction, inclusion properties, crystallisation fronts etc. The present proceedings contain abstracts and viewgraphs of the oral presentations. During the last decades numerical simulations have become an important tool in industry and research to study the structure of flows and the properties of heat and mass transfer. However, in case of liquid metal flows there exists a significant problem to validate the codes with experimental data due to the lack of available measuring techniques. Due to the material properties (opaque, hot, chemical aggressive) the measurement of flow quantities is much more delicate in liquid metals compared to ordinary water flows. The generalisation of results obtained by means of water models to real liquid metal flows has often to be considered as difficult due to the problems to meet the actual values of non-dimensional flow parameters (Re, Pr, Gr, Ha, etc.). Moreover, a strong need has to be noted to make measuring techniques available to monitor and to control flow processes in real industrial facilities.
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Buresh, Megan, Shawna Morgan i Carrie Sepp. "Implementation of Medication Therapy Management (MTM) in Community Pharmacies". The University of Arizona, 2008. http://hdl.handle.net/10150/624309.

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Class of 2008 Abstract
Objectives: The purpose of this study was to identify how community pharmacies have integrated medication therapy management (MTM) programs into their workflow and specifically determine the changes that were made in order to deliver such services. Methods: This was a descriptive study on the implementation of MTM programs in community pharmacies. Pharmacy managers associated with Cardinal Health, Medicine Shoppe International, United Drugs, the Iowa Pharmacy Association (IPA) and 10 additional selected pharmacists were invited to take an online survey regarding MTM program implementation in their pharmacy. Exclusion criteria were those pharmacists that did not provide any MTM services from January 2006 through December 2007. The primary dependent variables included time spent training, time to complete clinical pharmacy program sessions, scheduling and implementing clinical pharmacy sessions, staffing, and cost for additional equipment. Data analysis included percents and frequencies for categorical variables addressed in the internet survey. Results: Pharmacists that participated in this survey were mostly male (82%) and had been practicing for greater than 10 years. Only 3 out of 17 participants were female and all were a part of the group practicing for less than 10 years. The majority of participants in both groups completed 0-2 MTM sessions per week (p=0.65). In order to complete these sessions, the hiring of additional staff was not required (82%) nor was the purchase of additional equipment (70%). Conclusions: The implementation of MTM programs in community pharmacies requires little to no additional time or money. With this data, more pharmacists should be inclined to provide MTM sessions.
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Zhao, Yanzhu. "Metal-transfer-molding (MTM) technique for micromachined RF components". Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24750.

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Thesis (Ph.D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009.
Committee Chair: Mark G. Allen; Committee Member: J. Stevenson Kenney; Committee Member: Joy Laskar; Committee Member: Oliver Brand; Committee Member: Peter Hesketh.
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Książki na temat "MTMM"

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1879-1949, Friesz Achille-Emile-Othon, i MTM (Museum), red. Émile-Othon Friesz: Crtež četiri lika koja ples̆u iz Muzeja Mimara = Émile-Othon Friesz : the draving [sic] of Four figures dancing from the Mimara Museum. Zagreb: Muzej Mimara, 2005.

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Millonig, Marsha K. 100 MTM tips for the pharmacist. Washington, DC: American Pharmacists Association, 2008.

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(Museum), MTM, red. Francesco La Marra: Crtač Napuljske škole u Muzeju Mimara = Francesco La Marra : the draughtsman of the Neapolitan school in the Mimara Museum. Zagreb: Muzej Mimara, 2007.

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1503-1572, Bronzino Agnolo, i MTM (Museum), red. Agnolo Bronzino: Crtež idealizirane ženske glave iz Muzeja Mimara = Agnolo Bronzino : the drawing of an idealised female head in the Mimara Museum. Zagreb: Muzej Mimara, 2001.

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1686-1755, Oudry Jean-Baptiste, red. Jean-Baptiste Oudry: Crtez̆ Dva goluba ili dvije ptice iz porodice jarebica iz Muzeja Mimara = Jean-Baptiste Oudry : the drawing Two pigeons or two birds from the partridge family from the Mimara Museum. Zagreb: Muzej Mimara, 2006.

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District, United States Bureau of Land Management Miles City. Decision record: Western Energy Company coal lease application (MTM-80697). Miles City, MT: Bureau of Land Management, Miles City District Office, 1995.

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United States. Bureau of Land Management. Miles City District. Decision record: Western Energy Company coal lease application (MTM-80697). Miles City, MT: The Bureau, 1995.

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U.S. DEPT. OF THE ARMY. Reporting of transportation discrepancies in shipments (RCS MTMC-54(R1)): Transportation and travel. Washington, DC: Dept. of the Army, 1989.

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Committee, IEEE Computer Society Test Technology Standards. IEEE standard for module test and maintenance bus (MTM-Bus) protocol. New York: IEEE, 1996.

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Survey, United States Geological. Controlled photomosaic of the MTM 20197 quadrangle, Orcus Patera region of Mars. Reston, VA: U.S. Geological Survey, 1995.

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Części książek na temat "MTMM"

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Schermelleh-Engel, Karin, Christian Geiser i G. Leonard Burns. "Multitrait-Multimethod-Analysen (MTMM-Analysen)". W Testtheorie und Fragebogenkonstruktion, 661–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-61532-4_25.

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Pan, Mingwei. "Rating Scale Validation: An MTMM Approach". W Nonverbal Delivery in Speaking Assessment, 199–214. Singapore: Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-10-0170-3_7.

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Castro-Schilo, Laura. "Leveraging component-based methods to improve MTMM analysis". W Advanced Multitrait-Multimethod Analyses for the Behavioral and Social Sciences, 154–83. London: Routledge, 2021. http://dx.doi.org/10.4324/9780429320989-8.

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Alwin, Duane F. "Evaluating the Reliability and Validity of Survey Interview Data Using the MTMM Approach". W Question Evaluation Methods, 263–93. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118037003.ch17.

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Koch, Tobias, Jana Holtmann, Claudia Crayen i Johannes Heekerens. "Construction of informative priors for the application of CFA-MTMM models in small samples". W Advanced Multitrait-Multimethod Analyses for the Behavioral and Social Sciences, 129–53. London: Routledge, 2021. http://dx.doi.org/10.4324/9780429320989-7.

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Tarka, Piotr. "CFA-MTMM Model in Comparative Analysis of 5-, 7-, 9-, and 11-point A/D Scales". W Analysis of Large and Complex Data, 553–62. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-25226-1_47.

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Mohler, Peter Ph. "Response to Alwin's Chapter: Evaluating the Reliability and Validity of Survey Interview Data Using the MTMM Approach". W Question Evaluation Methods, 295–318. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118037003.ch18.

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Nussbeck, Fridtjof W., Michael Eid, Christian Geiser, Delphine S. Courvoisier i David A. Cole. "Konvergente und diskriminante Validität über die Zeit: Integration von Multitrait-Multimethod-Modellen (MTMM-Modellen) und der Latent-State-Trait-Theorie (LST-Theorie)". W Testtheorie und Fragebogenkonstruktion, 713–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-61532-4_27.

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Karthikeyan, S. S., i R. Adeline Mellita. "Additive Manufacturing of MTM-FSS". W Metamaterials Science and Technology, 1–26. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-15-8597-5_32-1.

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Karthikeyan, S. S., i R. Adeline Mellita. "Additive Manufacturing of MTM-FSS". W Metamaterials Science and Technology, 695–720. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6441-0_32.

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Streszczenia konferencji na temat "MTMM"

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CUI, FENG, TAUQIR BIBI i ZHIJUN WU. "MTMM – A MATLAB TOOLBOX FOR MACROMOLECULAR MODELING". W Proceedings of the International Conference. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812702098_0029.

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Yuceoglu, Umur, Jaber Javanshir i O¨zen Guvendik. "On a General Approach to Free Vibrations Response of Integrally-Stiffened and/or Stepped-Thickness Rectangular Plates or Panels". W ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66980.

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This study is mainly concerned with a “General Approach” to the “Theoretical Analysis and the Solution of the Free Vibrations Response of Integrally-Stiffened and/or Stepped-Thickness Plates or Panels with Two or more Integral Plate Stiffeners”. In general, the “Stiffened System” (regardless of the number of “Plate Stiffeners”) is considered to be composed of dissimilar “Orthotropic Mindlin Plates” with unequal thicknesses. The dynamic governing equations of the individual plate elements of the “System” and the stress resultant-displacement expressions are combined and algebraically manipulated. These operations lead to a new “Governing System of the First Order Ordinary Differential Equations” in “state vector” forms. The new “Governing System of Equations” facilitates the direct application of the present method of solution, namely, the “Modified Transfer Matrix Method (MTMM) (with Interpolation Polynomials)”. As shown in the present study, the “MTMM” is sufficiently general to handle the “Free Vibrations Response” of the “Stiffened System” (with, at least, one or up to three or four “Integral Plate Stiffeners”). The present analysis and the method of solution are applied to the typical “Stiffened Plate or Panel System with Two Integral Plate Stiffeners”. The mode shapes with their natural frequencies are presented for the “Isotropic Al-Alloy” and “Orthotropic Composite” cases and for several sets of support conditions. As an additional example, the case of the “Stiffened Plate or Panel System with Three Integral Plate Stiffeners” is also considered and is shown in terms of the mode shapes and their natural frequencies for one set of the boundary conditions. Also, some parametric studies of the natural frequencies versus the “Stiffener Thickness Ratio” and the “Stiffener Length (or Width) Ratio” are investigated and are graphically presented.
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Yuceoglu, U., J. Javanshir, T. Farsadi i O¨ Gu¨vendik. "Rotation of Material Axes Effects on Free Bending Vibrations Response of Composite Mindlin Base Plates or Panels Stiffened by Three Bonded Plate Strips". W ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62779.

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In the present study, the rotation of material axes on the free bending vibrations response of a certain type of composite “Bonded and Stiffened System” is theoretically analyzed and numerically solved with some numerical results. The composite “Bonded and Stiffened System” is composed of a “Mindlin Base Plate or Panel” reinforced by three “Bonded Stiffening Plate Strips”. In the analysis, the 90° rotation effects of the material axes on the natural frequencies and the mode shapes of the entire “System” are investigated. The aforementioned “Bonded and Stiffened System” is considered in terms of the “System.1” and the “System.2”. In the “System.1”, the material axes of the “Base Plate” are rotated 90° (about z-axis), while there is no change in the material axes of the “Bonded Plate Strips”. In the “System.2”, there is no change in the material directions of the “Base Plate”, while the material axes of the “Bonded Plate Strips” are rotated 90° degrees. The “Base Plate or Panel” and the three “Bonded Plate Strips” are assumed to be dissimilar “Orthotropic Mindlin Plates”. The in-between, relatively very thin, linearly elastic adhesive layers are considered with different material characteristics. All “Mindlin Plate Elements” of both “Systems.1 and 2” are included in the analysis with the transverse (or bending) moments of inertia and rotary moments of inertia. The dynamic equations of the “Mindlin Plate Elements” and the in-between adhesive layer expressions (with the transverse normal and shear stresses) are combined togather. After some algebraic manipulations and combinations, they are eventually reduced to a set of the “Governing System of the First Order O.D.E’s” in compact matrix forms with the “state vectors” for each case of the “System.1” and “System.2”. The aforementioned “Governing Equations” facilitate direct application of the present method of solution that is the “Modified Transfer Matrix Method (MTMM) (with Interpolation Polynomials)”. The “Governing Equations” are numerically Integrated by means of the “ (MTMM) (with Interpolation Polynomials)”. The natural frequencies and the mode shapes of the “Systems.1 and 2” are computed and graphically presented for some “Support Conditions” of the “Systems” under consideration. The comparison of the numerical results led to some important conclusions.
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Heroux-Vaillancourt, Mikael, i Catherine Beaudry. "Validation of innovation indicators from companies’ websites". W CARMA 2018 - 2nd International Conference on Advanced Research Methods and Analytics. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/carma2018.2018.8333.

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In this exploratory study, we use a web mining technique to source data in order to create innovation indicators of Canadian nanotechnology and advanced materials firms. 79 websites were extracted and analysed based on keywords related to the concepts of R&D and intellectual property. To understand what our web mining indicators actually measure, we compare them with those from a classic questionnaire-based survey. Formative indices from the surveys variables were built to better represent all the possibilities resulting from the web mining indicators. A MTMM matrix lead us to conclude that the formative indices are a good representation of the web mining indicators. As a consequence, the data extracted via our web mining technique can be used as proxies for the relative importance of R&D and the importance of IP, which would have previously only been measured using conventional methods such as government administrative data or questionnaire-based surveys.
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Yuceoglu, U., i Ö. Güvendik. "Effects of Variable Non-Central Locations of Bonded Double Doubler Joint System on Free Flexural Vibrations of Orthotropic Composite Mindlin Plate or Panel Adherents". W ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87328.

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This study investigates the “Effects of Variable Non-Central Locations of Bonded Double Doubler Joint System on Free Flexural Vibrations of Orthotropic Composite Mindlin Plate or Panel Adherents”. The problem is theoretically analyzed and is numerically solved in terms of the natural frequencies and the corresponding mode shapes of the entire “System”. The “Bonded Double Doubler Joint System” and the “Plate of Panel Adherents” are considered as dissimilar “Orthotropic Mindlin Plates”. In all plate elements, the transverse shear deformations and the transverse and rotary moments of inertia are included in the analysis. The relatively very thin adhesive layers in the “Bounded Joint Region” are assumed to be linearly elastic continua with transverse normal and shear deformations. The “damping effects” in the adhesive layers and in all plate elements of the “System” are neglected. The sets of the “Dynamic Mindlin Equations” of both upper and lower “Doubler Plates” and the “Plate or Panel Adherents” and the adhesive layer equations are combined together with the orthotropic stress resultant-displacement expressions resulting in a set of “Governing System of PDE’s” in a “special form”. By making use of the “Classical Levy’s Solutions”, in aforementioned “Governing PDE’s” and following some algebraic manipulations and combinations, the “Governing System of the First Order Ordinary Differential Equations” are obtained in compact “state vector” forms. Thus, the “Initial and Boundary Value Problem” at the beginning is finally converted into a “Multi-Point Boundary Value Problem” of Mechanics (and Physics). These analytical results developed facilitate the present method of solution that is the “Modified Transfer Matrix Method (MTMM) (with Interpolation Polynomials)”. The final set of the “Governing System of ODE’s” is numerically integrated by means of the “MTMM with Interpolation Polynomials”. In this way, the natural frequencies and the mode shapes of the “Bonded System”, depending on the variable non-central location of the “Bonded Double Doubler Joint System” are computed for several sets of the far left and the far right “Boundary Conditions” of the “Orthotropic Plate or Panel Adherents”. It was observed that, based on the numerical results, the mode shapes and their natural frequencies are very much affected by the variable position (or location) of the “Bonded Double Doubler Joint” in the “System”. It was also found that as the “Bonded Double Doubler Joint” moves from the central position in the “System” towards the increasingly non-central position, the natural frequencies (in comparison with those of the central position) changes, respectively. The highly-stiff “Bonded Double Doubler Joint Region” becomes “almost stationary” in all modes in “Hard” Adhesive cases.
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Yuceoglu, U., i O. Gu¨vendik. "Effects of Rotation of Material Axes on Free Flexural Vibrations of Centrally Bonded Symmetric Double Doubler Joint in Composite Mindlin Plates or Panels". W ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62502.

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The present study investigates the serious effects of rotation of material axes on the free dynamic response of composite plates or panels with “Bonded Double Doubler Joint Systems”. The “Plate Adherends” and the “Upper and Lower Doubler Plates” are connected through the relatively very thin adhesive layers. The “Bonded Double Doubler Joint System” is considered in terms of the “System.1” and the “System.2”. In the “System.1”, the material directions of “Plate Adherends” are rotated 90° (about z-axis) while there is no change in the material axes of the “Double Doubler Plates”. In the “System.2”, the material directions of the “Double Doubler Plates” are rotated 90° (about z-axis), while there is no change in the material axes of the “Plate Adherends”. All plate elemnts of the “System.1” and the “System.2” are assumed to be dissimilar “Orthotropic Mindlin Plates” with the transverse shear deformations and the transverse (or bending) moments of inertia and the rotary moments of inertia. The upper and lower adhesive layers are linearly elastic continua with dissimilar material properties and with unequal thicknesses. The damping effects in all plate elements and also in adhesive layers are neglected. The entire theoretical analysis for both “Systems.1 and 2” is based on the “Orthotropic Mindlin Plate Theory”. For this purpose, the dynamic equations of the left and the right “Plate adherends” and of the “Upper and Lower Doubler Plates” and the equations of the adhesive layers are combined to-gather with the stress resultant – displacement expressions of the plate elements. Then, after some algebric manipulations and combinations, and with the “Classical Levy’s Solutions” the original dynamic equations are finally reduced into the two new sets of the “Governing System of the First Order O.D.E’s” in compact matrix forms with the “state vectors” for the “System.1” and “System.2”, respectively. In this way, the original “Initial and Boundary Value Problem” (or the free vibrations problem) is converted to the “Multi–Point Boundary Value Problem” of Mechanics and Physiscs. In the case of both “Systems.1 and 2”, these results facilitate the direct application of the present method of solution that is the “Modified Transfer Matrix Method (MTMM) (with Interpolation Polynomials)”. The aforementioned “Governing Equations” for both “Systems.1 and 2” are numerically integreted by making use of the “ (MTMM) (with Interpolation Polynomials)”. Thus, the natural frequencies and the mode shapes of the “Systems.1” and the “System.2” are graphically presented for the same “Support Conditions”. The comparison of the numerical results corresponding to each “System.1” and “System.2” for the same “Support Conditions” is considered leading to some very important conclusions.
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Yuceoglu, U., N. Gemalmayan i O. Sunar. "Free Bending Vibrations of Integrally-Stiffened and/or Stepped-Thickness Rectangular Plates or Panels With a Non-Central Plate Stiffener". W ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41066.

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The present study is primarily concerned with the “Free Bending Vibrations of Integrally-Stiffened and/or Stepped-Thickness Plates or Panels with a Non-Central Plate Stiffener”. The general theoretical formulation is based on the “Mindlin Plate Theory”. The plate elements of the system are considered to be made of dissimilar orthotropic materials with unequal thicknesses. The transverse shear deformations and the transverse and the rotary moments of inertia of plate elements are included in the analysis. The damping effects, however, are neglected. The dynamic equations of the orthotropic “Mindlin Plates” in combination with the stress resultant-displacement expressions are algebraically manipulated. They are eventually reduced to a set of the “Governing System of the First Order Ordinary Differential Equations” in the “state vectors” form. The resulting differential equations system is numerically integrated by making use of the “Modified Transfer Matrix Method (MTMM) (with Interpolation Polynomials)”. The mode shapes with their dimensionless natural frequencies are presented for various support conditions in the “isotropic” Al-Alloy and in the “orthotropic” composite cases. Additionally, the effect of some of the important parameters such as (“Stiffener Position Ratio”, “Thickness Ratio”, “Stiffener Length (or Width) Ratio)” on the dimensionless natural frequencies are investigated and plotted. Based on the numerical results, some brief but important conclusions are presented.
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Yuceoglu, U., O. Gu¨vendik i V. O¨zerciyes. "Free Flexural Vibrations Response of Composite Mindlin Plates or Panels With a Centrally Bonded Symmetric Double Lap Joint (or Symmetric Double Doubler Joint)". W ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79233.

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The present study is concerned with the “Free Flexural Vibrations Response of Composite Mindlin Plates or Panels with a Centrally Bonded Symmetric Double Lap Joint (or Symmetric Double Doubler Joint). The plate “adherends” and the plate “doublers” are considered as dissimilar, orthotropic “Mindlin Plates” with the transverse and the rotary moments of inertia. The relatively, very thin adhesive layers are taken into account in terms of their transverse normal and shear stresses. The mid-center of the bonded region of the joint is at the mid-center of the entire system. In order to facilitate the present solution technique, the dynamic equations of the plate “adherends” and the plate “doublers” with those of the adhesive layers are reduced to a set of the “Governing System of First Order ordinary Differential Equations” in terms of the “state vectors” of the problem. This reduced set establishes a “Two-Point Boundary Value Problem” which can be numerically integrated by making use of the “Modified Transfer Matrix Method (MTMM) (with Interpolation Polynomials)”. In the adhesive layers, the “hard” and the “soft” adhesive cases are accounted for. It was found that the adhesive elastic constants drastically influence the mode shapes and their natural frequencies. Also, the numerical results of some parametric studies regarding the effects of the “Position Ratio” and the “Joint Length Ratio” on the natural frequencies for various sets of support conditions are presented.
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O¨zerciyes, V., i U. Yuceoglu. "Free Asymmetric Vibrations of Composite Full Circular Cylindrical Shells Stiffened by a Bonded Non-Central Shell Segment". W ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79339.

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In this study, the “Free Asymmetric Vibrations of Composite Full Circular Cylindrical Shells Stiffened by A Bonded Non-Central Shell Segment” are analyzed and investigated in some detail. The “full” circular cylindrical “base” shell and the non-centrally bonded circular cylindrical shell “stiffener” are assumed to be made of dissimilar orthotropic materials. The “base” shell and the “stiffening” shell segment are adhesively bonded by an in-between, relatively very thin, yet linearly elastic adhesive layer. In the theoretical analysis, for both shell elements, a “First Order Shear Deformation Shell Theory (FSDST)” such as “Timoshenko-Mindlin -(and Reissner)” type is employed. The damping effects in the entire system are neglected. The sets of dynamic equations of both “base” shell and “stiffening” shell segment and the adhesive layer are combined together, manipulated and are, finally, reduced to a “Governing System of First Order Ordinary Differential Equations” in Forms of the “state vectors” of the problem. This result constitutes a so-called “Two-Point Boundary Value Problem” for the entire composite shell system, which facilitates the present solution procedure. The final system of equations is numerically integrated by means of the “Modified Transfer Matrix Method (MTMM) (with Chebyshev Polynomials)”. The typical mode shapes with their natural frequencies are presented for several sets of support conditions. The very significant effect of the “hard” and the “soft” adhesive layer on the mode shapes and the natural frequencies are demonstrated. Some important parametric studies (such as the “Joint Length Ratio”, etc.) are also presented.
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Yuceoglu, U., O. Gu¨vendik i V. O¨zerciyes. "Free Transverse Vibrations of Orthotropic Composite Mindlin Plates or Panels With a Non-Centrally Bonded Symmetric Lap Joint (or Symmetric Doubler Joint)". W ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14013.

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The problem of the "Free Transverse Vibrations of Orthotropic Composite Mindlin Plates or Panels with a Non-Centrally Bonded Symmetric Lap Joint (or Symmetric Doubler Joint)" is theoretically analyzed and solved with some numerical results. The "Bonded Joint" system is composed of two dissimilar, orthotropic plate "adherends" non-centrally bonded and connected by a dissimilar, orthotropic "doubler" plate through a very thin and elastic adhesive layer. The "adherends" and the single "doubler" are taken into account as the "Mindlin Plates" with the transverse shear deformations and the transverse and the rotary moments of inertia. The adhesive layer is considered as a linearly elastic continuum with the transverse normal and shear stresses. The damping effects are neglected. The dynamic equations of the plate "adherends", the "doubler" plate and the adhesive layer in combination with the stress resultant-displacement expressions, after some algebraic manipulations, are finally reduced to a set of the "Governing System of the First Order Ordinary Differential Equations" in matrix form in terms of the "state vectors" of the problem. The aforementioned set of the "Governing Equations" is integrated by means of the "Modified Transfer Matrix Method (MTMM) (with Interpolation Polynomials)". Several mode shapes with their corresponding natural frequencies are presented for the "hard" and the "soft" adhesive cases. It was found that there are significant differences in mode shapes and natural frequencies corresponding to the "hard" and the "soft" adhesive cases. Additionally, some parametric studies such as the effects of the "Bonded Joint Length Ratio" and the "Bonded Joint Position Ratio" on the natural frequencies are included in this first study.
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Raporty organizacyjne na temat "MTMM"

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Harvey, Thomas A. MTMC Terminal Operations: Restructuring for the Future. Fort Belvoir, VA: Defense Technical Information Center, kwiecień 2002. http://dx.doi.org/10.21236/ada401859.

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Snyder, Terry W., i Charles D. Guilliams. Integration of Automatic Identification Technology into MTMC Operations. Fort Belvoir, VA: Defense Technical Information Center, sierpień 1995. http://dx.doi.org/10.21236/ada305827.

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McLean, Michael L., i Sr. Evaluate and Implement Special Measurement System Using Gerber Garment Technology's MTM Software. Fort Belvoir, VA: Defense Technical Information Center, czerwiec 1997. http://dx.doi.org/10.21236/ada333485.

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Geologic map of the MTM-15182 and MTM-15187 quadrangles, Gusev Crater-Ma'adim Vallis region, Mars. US Geological Survey, 2000. http://dx.doi.org/10.3133/i2666.

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Geologic maps of the MTM 25062 Quadrangle (digital compilation) and the MTM 25067 Quadrangle (manual compilation), Kasei Valles region of Mars. US Geological Survey, 1996. http://dx.doi.org/10.3133/i2398.

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Geologic map of the Galaxias quadrangle (MTM 35217) of Mars. US Geological Survey, 1999. http://dx.doi.org/10.3133/i2579.

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Geologic map of the western Ophir Planum region (MTM -10067) of Mars. US Geological Survey, 1998. http://dx.doi.org/10.3133/i2588m.

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Geologic map of the MTM -85280 quadrangle, Planum Australe region of Mars. US Geological Survey, 1998. http://dx.doi.org/10.3133/i2595.

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Geologic Map of the MTM-85000 Quadrangle, Planum Australe Region of Mars. US Geological Survey, 2001. http://dx.doi.org/10.3133/i2686.

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Geologic map of the MTM 85080 Quadrangle, Chasma Boreale Region of Mars. US Geological Survey, 2003. http://dx.doi.org/10.3133/i2753.

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