Relevant bibliographies by topics / Longitudinal section

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Longitudinal section'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Longitudinal section"

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Brzezińska, K., and A. Szychowski. "Stability and Resistance of Steel Continuous Beams with Thin-Walled Box Sections." Archives of Civil Engineering 64, no. 4 (December 1, 2018): 123–43. http://dx.doi.org/10.2478/ace-2018-0048.

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AbstractThe issues of local stability and ultimate resistance of a continuous beam with thin-walled box section (Class 4) were reduced to the analysis of the local buckling of bilaterally elastically restrained internal plate of the compression flange at longitudinal stress variation. Critical stress of the local buckling was determined using the so-called Critical Plate Method (CPM). In the method, the effect of the elastic restraint of the component walls of the bar section and the effect of longitudinal stress variation that results from varying distribution of bending moments were taken into account. On that basis, appropriate effective characteristics of reliable sections were determined. Additionally, ultimate resistances of those sections were estimated. The impact of longitudinal stress variation and of the degree of elastic restraint of longitudinal edges on, respectively, the local buckling of compression flanges in the span section (p) and support section (s) was analysed. The influence of the span length of the continuous beam and of the relative plate slenderness of the compression flange on the critical ultimate resistance of box sections was examined.
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Duman, Soner, Sait Sen, Ali I. Günal, Gülay Asci, Fehmi Akcicek, and Ali Basci. "How Can We Standardize Peritoneal Thickness Measurements in Experimental Studies in Rats?" Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 21, no. 3_suppl (December 2001): 338–41. http://dx.doi.org/10.1177/089686080102103s61.

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Objective The various methods of measuring peritoneal thickness in experimental studies in rats have yielded conflicting results. Also, no standard method exists to assess histologic findings in peritoneal morphology. We therefore undertook the present study to create a reproducible and standard method for assessing rat peritoneal histology in experimental studies. Methods Parietal peritoneal samples from 61 Wistar albino rats were used in the study. Excepting the skin, the whole abdominal wall from each rat was cut two-dimensionally (longitudinally and horizontally), fixed in formalin, and processed routinely for light microscopy. Slides were divided into two groups according to the direction of the inner abdominal muscle fibers in the sections. Longitudinal and horizontal sections of abdominal muscle were evaluated. For every section, one histopathology image was captured from a light microscope to an IBM-compatible computer. Peritoneal thickness (mean of the maximum and the minimum) and submesothelial area (SMA) were drawn on the image. A computer program then automatically performed measurements. Two different measurement methods were compared, based on the same sections. Results The mean peritoneal thickness was 91 ± 8 μm in the longitudinal sections and 75 ± 7 μm in the horizontal sections ( p < 0.05). Measurements of the SMA were found to be 47,762 ± 4,374 μm2 for the longitudinal sections and 40,389 ± 3,631 μm2 for the horizontal sections ( p < 0.05). In both types of sections, a positive correlation (96% for longitudinal and 90% for horizontal) was found between the SMA and the peritoneal thickness ( p < 0.01). The SMA measurements correlated significantly with functional properties [ratio of the dialysate concentration of glucose initially and after a 1-hour dwell (D1/D0 glucose), ultrafiltration, and protein loss; p < 0.01]. Conclusion Peritoneal thickness can be measured as a mean of the minimum and maximum values. That measurement strongly correlates with submesothelial area. Both types of sections can be used, but the horizontal and longitudinal sections show systematic differences. All samples in a study should be taken using the same section pattern, either longitudinal or horizontal.
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Kuroda, Masaaki, and Dieter Schildknecht. "Color dipole picture of deep inelastic scattering, revisited." International Journal of Modern Physics A 31, no. 30 (October 26, 2016): 1650157. http://dx.doi.org/10.1142/s0217751x16501578.

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Based upon the color-dipole picture, we provide closed analytic expressions for the longitudinal and the transverse photoabsorption cross-sections at low values of the Bjorken variable of [Formula: see text]. We compare with the experimental data for the longitudinal-to-transverse ratio of the (virtual) photoabsorption cross-section and with our previous fit to the experimental data for the total photoabsorption cross-section. Scaling in terms of the low-[Formula: see text] scaling variable [Formula: see text] is analyzed in terms of the reduced cross-section of deep inelastic scattering.
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Cho, Hong geun, Hideyuki Sato, Kanako Harada, Jumpei Arata, Shinya Onogi, Susumu Oguri, Tetsuo Ikeda, Makoto Hashizume, and Mamoru Mitsuishi. "Detection of Longitudinal-Section View of Blood Vessels in Laparoscopic Ultrasound Image." Abstracts of the international conference on advanced mechatronics : toward evolutionary fusion of IT and mechatronics : ICAM 2015.6 (2015): 265–66. http://dx.doi.org/10.1299/jsmeicam.2015.6.265.

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Ebenstein, Donna M., and Kathryn J. Wahl. "Anisotropic nanomechanical properties of Nephila clavipes dragline silk." Journal of Materials Research 21, no. 8 (August 1, 2006): 2035–44. http://dx.doi.org/10.1557/jmr.2006.0246.

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Spider silk is a material with unique mechanical properties under tension. In this study, we explore the anisotropic mechanical properties of spider silk using instrumented indentation. Both quasistatic indentation and dynamic stiffness imaging techniques were used to measure the mechanical properties in transverse and longitudinal sections of silk fibers. Quasistatic indentation yielded moduli of 10 ± 2 GPa in transverse sections and moduli of 6.4 ± 0.5 GPa in longitudinal sections, demonstrating mechanical anisotropy in the fiber. This result was supported by dynamic stiffness imaging, which also showed the average reduced modulus measured in the transverse section to be slightly higher than that of the longitudinal section. Stiffness imaging further revealed an oriented microstructure in the fiber, showing microfibrils aligned with the drawing axis of the fiber. No spatial distribution of modulus across the silk sections was observed by either quasistatic or stiffness imaging mechanics.
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Vasylkovskyi, Olexiy, Sergiy Leshchenko, Sergiy Moroz, Olexandr Nesterenko, and Ludmyla Molokost. "Before Creating the Concept of the «Ideal» Grain Separator Sieve." National Interagency Scientific and Technical Collection of Works. Design, Production and Exploitation of Agricultural Machines, no. 50 (2020): 52–58. http://dx.doi.org/10.32515/2414-3820.2020.50.52-58.

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The article presents considerations for creating conditions for the intensification of the process of grain separation by geometric features. The review of constructions and the analysis of work of known sieve surfaces from a position of possibility of maintenance of high indicators of technological efficiency at the expense of acceleration of orientation of particles concerning sieve apertures is carried out. It is established that the most favorable orientation conditions are provided by the surfaces formed by longitudinal elements of small cross-section of streamlined shape, which minimize the possibility of placing particles on them in positions of stable equilibrium. Theoretical possibilities of increasing the living cross-sectional areas and live cross-sectional coefficients of sieve canvases without cross-sections are revealed. The dependences of the total width of the longitudinal sections and the coefficient of the living cross section of the sieves on the width of the longitudinal sections for different sieves are given. This makes it possible to visually assess the need to increase the living cross section of the sieves by reducing the width of the longitudinal sections that form them. A significant reduction in the width of the partitions is possible due to the use of new materials - braided cords made of ultra-high molecular weight polyethylene type Spectra / Dyneema, which provide high mechanical strength and wear resistance with «absolute» inextensibility.
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Kusno. "On the modeling of cross-section and longitudinal section of pipes." Journal of Physics: Conference Series 1321 (October 2019): 022068. http://dx.doi.org/10.1088/1742-6596/1321/2/022068.

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Foroughi, Saeid, and Süleyman Bahadır Yüksel. "Investigation of moment-curvature and effective section stiffness of reinforced concrete columns." Challenge Journal of Structural Mechanics 7, no. 3 (September 15, 2021): 135. http://dx.doi.org/10.20528/cjsmec.2021.03.003.

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In determining the seismic performance of reinforced concrete (RC) structures in national and international seismic code, it is desired to use effective section stiffness of the cracked section in RC structural elements during the design phase. Although the effective stiffness of the cracked section is not constant, it depends on parameters such as the dimension of the cross-section, concrete strength and axial force acting on the section. In this study, RC column models with different axial load levels, concrete strength, longitudinal and transverse reinforcement ratios were designed to investigate effective stiffness. Analytically investigated parameters were calculated from TBEC (2018), ACI318 (2014), ASCE/SEI41 (2017), Eurocode 2 (2004) and Eurocode8 (2004, 2005) regulations and moment-curvature relationships. From the numerical analysis results, it is obtained that the axial load level, concrete strength, longitudinal and transverse reinforcement ratios have an influence on the effective stiffness factor of RC column sections. The calculated effective stiffness for RC columns increases with increasing transverse reinforcement ratio, longitudinal reinforcement ratio and concrete strength. Due to the increase of axial force, effective stiffness values of concrete have increased.
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Li, Ke Min, Zhi Fu Huang, Chao Feng Qin, Han Wen Ma, and Wei Yao Zhang. "Friction and Wear Properties of Oriented Fe2B with Different Cr Additions under Water-Lubricated Condition." Materials Science Forum 975 (January 2020): 3–8. http://dx.doi.org/10.4028/www.scientific.net/msf.975.3.

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In the present study, pure oriented Fe2B with Cr addition were prepared. The friction and wear properties of oriented Fe2B with different Cr additions were investigated by optical microscopy, scanning electron microscopy and 3D laser scanning microscope. Results indicate that fracture toughness of the cross section is higher than that of the longitudinal section invariably with the same Cr addition. Both cross and longitudinal sections, the fracture toughness value increases from 1Cr to 2Cr and decreases from 2Cr to 3Cr. Friction coefficient and wear loss of cross section are lower than those of the longitudinal section under the same Cr addition. For the identical grain orientation, the friction coefficient and wear loss rise from 1Cr to 2Cr and then drop from 2Cr to 3Cr. 2Cr-C sample has the lowest friction coefficient and wear loss. On the contrary, the friction coefficient and wear loss of 3Cr-L sample are the highest. Wear mechanisms of Fe2B alloy are brittle rupture and abrasive wear.
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Hristov, Borislav. "Influence of the longitudinal inclination on the speed on highways." E3S Web of Conferences 263 (2021): 04007. http://dx.doi.org/10.1051/e3sconf/202126304007.

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The main objective of the present paper is to investigate the influence of the longitudinal inclination of grades on the speed behavior on highways. For assessing this dependence, all uphill and downhill highway sections were considered separately in the two travel directions and the mean values of both 85th and 15th percentile speeds were calculated for each section. In order to take into account the free speed selection, all speed limited highway sections were excluded from the study. To investigate the speed changes as a function of the longitudinal inclination, the speed differences V85 between the speeds at the end and the beginning of each individual ascending and descending section were calculated as well. The dependencies were assessed also using the “moving average” over the grades. Both methodological approaches show that the magnitude of the longitudinal inclination on uphill sections has a clear influence on the speed and on the speed differences. A significant reduction of the speed and a significant increase of the speed difference were established on ascending sections with slopes over 4%. Furthermore, it was found that the length of the ascending grades also affects the speed differences ΔV85, which increase considerably on longer uphill sections.
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Dissertations / Theses on the topic "Longitudinal section"

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Tillich, Daniel. "Generalized Modeling and Estimation of Rating Classes and Default Probabilities Considering Dependencies in Cross and Longitudinal Section." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-222601.

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Our sample (Xit; Yit) consists of pairs of variables. The real variable Xit measures the creditworthiness of individual i in period t. The Bernoulli variable Yit is the default indicator of individual i in period t. The objective is to estimate a credit rating system, i.e. to particularly divide the range of the creditworthiness into several rating classes, each with a homogeneous default risk. The field of change point analysis provides a way to estimate the breakpoints between the rating classes. As yet, the literature only considers models without dependencies or with dependence only in cross section. This contribution proposes multi-period models including dependencies in cross section as well as in longitudinal section. Furthermore, estimators for the model parameters are suggested. The estimators are applied to a data set of a German credit bureau.
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Hoffman, Alan Michael. "Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production in polarized proton collisions at [the square root of sigma] = 200 GeV." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53214.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2009.
In title on title page, "the square root of sigma" appears as the mathematical symbol, and "sigma" appears as the lower-case Greek letter. Cataloged from PDF version of thesis.
Includes bibliographical references (p. 123-126).
Twenty years of polarized lepton-nucleon scattering experiments have found that the contribution from quark spins (1/2[delta] [sigma]) to the spin of the proton is only ~ 35%. This has lead researchers to look elsewhere, specifically to gluon spin ([delta sigma]) for a large contribution to proton spin. [delta sigma] has been only loosely constrained in polarized DIS and SIDIS experiments. Polarized proton-proton collisions at RHIC provide sensitivity to [delta sigma] through measurements of the longitudinal double-spin asymmetry, ALL. This work presents a measurement of ALL for inclusive 7ro production in polarized proton-proton collisions using the STAR detector and data from RHIC Run 6. 7r0s are abundantly produced at mid-rapidity in proton-proton collisions, making them natural candidates for studies of [delta] [sigma]. Novel techniques for reconstructing 7ros at STAR are discussed, and a measurement of the unpolarized cross section presented. Finally, the measured ALL is compared to perturbative QCD predictions and from this comparison constraints are placed on [delta] [sigma].
by Alan Michael Hoffman.
Ph.D.
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Faleiros, Junior José Herbet. "Procedimentos de cálculo, verificação e detalhamento de armaduras longitudinais na seção transversal em elementos protendidos." Universidade Federal de São Carlos, 2010. https://repositorio.ufscar.br/handle/ufscar/4654.

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Made available in DSpace on 2016-06-02T20:09:13Z (GMT). No. of bitstreams: 1 3262.pdf: 8603825 bytes, checksum: 51c881687adbb3d6b1750785d0cfee94 (MD5) Previous issue date: 2010-08-24
The following paper presents methods of calculation, verification and detailing of prestressed longitudinal reinforcement in cross sections of elements subjected to bending conceptualizing prestressing systems and its constituent elements, as well as the development of practical examples, calculated and detailed in a didactic manner, seeking an easy understanding and learning. The present study chooses to calculate the longitudinal reinforcement at the ultimate limit state and check it out at the serviceability limit state, always following the current standards. To organize the concepts and cohesion of the information, it is necessary to discuss theoretical and conceptual foundation by assembling several authors who derive about the subject matter. In order to ensure the adoption of normative recommendations (NBR6118:2007 e NBR9062:2005), issues such as durability, cover, classes of environmental aggressiveness, combinations of calculating and limiting values of prestress are discussed. As an example, it is presented a calculation discussion from a structure tailored to different classes of environmental aggressiveness, maintaining its main features, such as: the vain, the cross section and loads. With this work we realize that the calculations are needed, since there is not a situation which determines the scaling of the longitudinal reinforcement. Lastly, we present suggestions for future papers. In order to maintain the geometric features needed to the placement of the active armor on the top edge and on the replacement of the active armor by the passive one at any percentage can only be accomplished in partial prestress. The concurrent examinations may prevent the use of certain sections, for example, when examinations on empty are exclusive, or when the moment value relative to the weight itself is small in relation to the total moment.
O presente trabalho apresenta métodos de cálculo, verificação e detalhamento de armaduras longitudinais protendidas nas seções transversais de elementos submetidos à flexão conceituando os sistemas de protensão e seus elementos constituintes, bem como, o desenvolvimento de exemplos práticos, calculados e detalhados de maneira didática, visando um fácil entendimento e aprendizado. Neste trabalho opta-se por calcular a armadura longitudinal no estado limite último e verificá-la no estado limite de serviço, seguindo sempre as normas vigentes. Para a organização dos conceitos e coesão das informações, faz-se necessária a discussão teórica e o embasamento dos conceitos através da reunião de diversos autores que discorrem sobre o assunto abordado. Pretendendo garantir a adoção das recomendações normativas (NBR6118:2007 e NBR9062:2005), são discutidas questões como durabilidade, cobrimentos, classes de agressividade ambiental, combinações de cálculo e valores limites de protensão. Na forma de exemplo, é apresentada uma discussão de cálculo a partir de uma estrutura dimensionada para variadas classes de agressividade ambiental, mantendo suas características principais, como: o vão, a seção transversal e os carregamentos. Com o trabalho percebe-se que são necessários os cálculos, pois não há uma situação determinante para o dimensionamento da armadura longitudinal. Para que se mantenham as características geométricas é necessária a colocação de armadura ativa na borda superior e na substituição da armadura ativa pela passiva em qualquer porcentagem só pode ser realizada na protensão parcial. As verificações simultâneas podem inviabilizar o uso de certas seções, por exemplo, quando as verificações em vazio são excludentes, ou quando, o valor do momento relativo ao peso próprio é pequeno em relação ao momento total. Por fim são apresentadas sugestões para trabalhos futuros.
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Makovskaja, Tatjana. "Požeminių 3D duomenų modelio komunikacijų vizualizacija." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080625_100917-06173.

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Baigiamajame magistro darbe nagrinėjama požeminių komunikacijų vizualizacija trimačiame modelyje. Šiame magistriniame darbe išnagrinėta 3D duomenų svarba ir pranašumas prieš 2D vizualizavimą. Buvo atliktas požeminių komunikacijų projektavimo tyrimas trima��io vaizdavimo programine įranga, ištirtas šių technologijų naudojimas užsienyje bei naudojimo perspektyvos Lietuvoje. Darbą sudaro 10 dalių: įvadas, informacijos vizualizavimo aplinkos, 3D duomenų modelio esmė, 3D programinės įrangos galimybės inžinerijoje,3D vizualizavimo programinė įranga,3D modeliavimo koordinačių sistemos, trimačio geoinformacinių sistemų modelio sudarymas, požeminių komunikacijų trimačio geoinformacinių sistemų modelio sudarymo metodika, požeminių komunikacijų duomenų surinkimo reikalavimai, požeminių komunikacijų 3D skaitmeninio modelio kūrimas, požeminių komunikacijų trimačio modelio naudojimas Lietuvoje ir pasaulyje,išvados, literatūros sąrašas.
In the magistrate thesis are researching visualization of Underground communications at 3D data model. In the thesis analyse 3D model data significance and advantage against 2D model data. Also researching program equipment projection of Underground communications 3D data model, technology usage in foreign countries and opportunities for use in Lithuania. Structure: introduction, information visualization surrounding, 3D data model essence, 3D data program equipment opportunity in the engineering, 3D data model equipment, 3D data model coordinate systems, 3D data model formation, formation model of underground communication at 3D data model, data assemblage standards of underground communications, underground communication 3D data model creation, 3D data model usage in the world and Lithuania, conclusions, references.
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Tretera, Michal. "Parní turbína pro průmyslovou teplárnu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443163.

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This diploma thesis deals with the thermodynamic design of a backpressure steam turbine. The mass flow of steam through the turbine is determined based on the required heat output, which is transferred in a heat exchanger at the turbine outlet. The governing stage of the turbine is in form of an impulse stage, with optimization of degree of reaction included. During the optimization, a suitable rotor blade was chosen as well as its size. The governing stage is followed by fifteen stages of reaction blading with the stage loading coefficient in the range of 2,75 to 2,80. The governing stage and the reaction blading both meet the mechanical strength requirements. Balancing piston, sealing system and bearings are also designed. Finally, a turbine characteristic is created as well as a longitudinal section. The designed turbine has a speed of 10 000 rpm. While supplying the required heat output, it has a terminal power output of 5 863,4 kW and a thermodynamic efficiency of 84,69 %.
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Costa, Hugo Câmara. "Cognitive, behavioral and familial associations of reading acquisition and academic achievement : a population-based longitudinal study from kindergarten to middle school." Thesis, Paris 5, 2014. http://www.theses.fr/2014PA05H115.

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Les études longitudinales en milieu scolaire débutant en maternelle permettent une analyse des facteurs propres à l'enfant et à son environnement impliqués dans le développement de la lecture et de la réussite scolaire. Cependant, les études visant à analyser l'influence longitudinale de ces facteurs dès l'école maternelle restent exceptionnelles en France. Une étude épidémiologique initiée en 2001 dans la Communauté Urbaine de Creusot Montceau (Saône-et-Loire, France) avait comme objectif l'examen des contributions des facteurs propres à l'enfant et des variables environnementales dans l'acquisition de la lecture et la réussite scolaire dès la maternelle (3-6 ans) jusqu'au milieu de l'école élémentaire (CE2, 8-9 ans). Le travail de thèse présenté a permis le prolongement de la période de recueil de donnés jusqu'à la fin du collège (3ème, 14-15 ans) représentant une période de suivi de 10 ans dans la population générale. L'objectif principal de ce travail est d'identifier les facteurs propres à l'enfant (cognitifs, académiques et comportementaux) et des variables environnementales (facteurs sociodémographiques et caractéristiques familiales) dans le développement de la lecture à la fin de l'école primaire (CM2) et la réussite scolaire à la fin du collège (3ème). Les échantillons comprenaient 829 enfant inscrits en Grande Section de Maternelle pendant l'année scolaire 2001-2001 (Cohorte 1, 90% de l'échantillon initial) suivis jusqu'à la fin du collège (année scolaire 2010-2011) et 812 enfants de Grande Section de Maternelle durant l'année 2003-2004 (Cohorte 3) suivis jusqu'à la fin de l'école élémentaire (Cours Moyen 2, année scolaire 2008-2009). En Grande Section de Maternelle, le recueil de données a compris l'évaluation des compétences cognitives, académiques et comportementales des enfants, ainsi que le recueil des informations concernant le contexte familial. Les mesures de réussite scolaire ont compris les résultats des enfants dans les évaluations nationales réalisées à la fin du collège pour la Cohorte 1, (Diplôme National du Brevet) et les performances des enfants dans une mesure standardisée de lecture de mots à la fin de l'école élémentaire pour la Cohorte 3 (ODEDYS, Jacquier-Roux, Valdois & Zorman, 2002). Les compétences de traitement phonologique, la connaissance de lettres et le comportement attentif étaient les prédicteurs le plus significatifs de la lecture de mots au Cours Moyen 2. Le signalement par les parents d'antécédents familiaux de difficultés de lecture était associé simultanément avec des difficultés de lecture et le comportement inattentif à la fin de l'école élémentaire. En 3ème année du collège, les compétences de langage oral, la connaissance de lettres, la mémoire verbal à court terme, le raisonnement perceptif (facteur non-verbal) et le comportement attentif des enfants en maternelle, ainsi que le niveau d'éducation des parents et le type de famille, ont prédit significativement la mesure de réussite scolaire générale à la fin du collège. En outre, les résultats ont montré l'influence de plusieurs caractéristiques familiales dont la nationalité du père, le mode de garde avant la scolarisation, les rituels d'endormissement et les antécédents familiaux de difficultés de lecture. Ces caractéristiques renvoient à des facteurs qui mettent un enfant en risque d'échec scolaire à la fin du collège. Ce travail contribue à la littérature scientifique existante concernant les facteurs propres à l'enfant et à son environnent familial liés à l'acquisition de la lecture et à la réussite scolaire. Les résultats permettent l'identification des facteurs familiaux mettant un enfant à risque d'échec scolaire. Il ont des importantes implications pour repérer le plus précocement possible les enfants à risque de développer des difficultés de lecture et d'échec scolaire et pour mettre en place des programmes d'intervention adéquats à ses difficultés dès le début des trajectoires académiques de l'enfant
Longitudinal studies starting during kindergarten provide an appropriate method to investigate the child- and environmental-level factors that account for children's reading and academic achievement later in their educational trajectories. In France, studies designed to follow-up children longitudinally from kindergarten onwards remain scarce. An epidemiological study started in 2001 in the Urban Community of Creusot Montceau (Saône-et-Loire, France) sought initially to identify the factors associated with children's reading acquisition and academic achievement from preschool (3-6 years) to the middle of elementary school (Grade 3, 8-9 years). The PhD project reported here aimed to extend the original design of data collection to the end of middle school (Grade 9, 14-15 years) spanning a 10-year follow-up period in the general population. This work aimed to investigate the specific contributions of child-level factors (cognitive-academic skills, behavior problems) and environment-level factors (sociodemographic and family characteristics) for children's subsequent reading acquisition at the end of elementary school (Grade 5), as well as academic achievement at the end of middle school (Grade 9). The samples of analysis comprised 829 kindergarteners in the 2001-2002 school year (Cohort 1, 90% of the initial sample) followed through the end of middle school (Cohort 1, 2010-2011 school year) and 812 kindergarteners in the 2003-2004 school year (Cohort 3), from which a sub-sample of 154 participants was followed through the end of elementary school (2008-2009 school year). At kindergarten, assessment included measures of children's cognitive-academic and behavioral skills, as well as family background characteristics. Outcome measures were composed of children's results in the national evaluations performed at the end of middle school for Cohort 1 ("Diplôme National du Brevet") and of children's scores in standardized measures of word reading achievement at the end of elementary school for Cohort 3 (ODEDYS, Jacquier-Roux, Valdois & Zorman, 2002). The results indicated that children's phonological processing skills, letter knowledge and attentive behavior were the most robust predictors of word reading achievement at Grade 5. In addition, parental reports of familial antecedents of reading difficulties also contributed to predict word reading at Grade 5 and were specifically associated with both reading difficulties and inattention behavior at this grade level. At Grade 9, children's oral language skills, letter knowledge, short-term verbal memory, perceptual reasoning (non-verbal cognitive ability) and attentive behavior at kindergarten predicted significantly the outcome measure of general academic achievement at Grade 9, together with parental educational level and family structure. Moreover, results indicated the influence of several family characteristics referring to father's nationality, type of early childcare, language-based bedtime routines and familial antecedents of reading difficulties as risk factors for children's subsequent academic underachievement. The present work contributes to the extant literature regarding the child- and family-level factors associated with subsequent reading acquisition and academic achievement from kindergarten to elementary and middle school. Importantly, these results allowed the identification of novel familial risk factors that influence negatively children's subsequent academic trajectories. These findings have important implications regarding the child and family factors that should be targeted during kindergarten in order to prevent children's subsequent reading and academic difficulties and to promote adequate intervention strategies early in children's educational trajectories
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PAGANI, ARIELA FRANCESCA. "NELLA BUONA SORTE: IL PROCESSO DI CAPITALIZZAZIONE NELLA RELAZIONE DI COPPIA." Doctoral thesis, Università Cattolica del Sacro Cuore, 2014. http://hdl.handle.net/10280/2871.

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Il presente progetto di ricerca si è focalizzato sul processo di capitalizzazione, ovvero la condivisione di eventi positivi con il/la partner, da cui ci si aspetta una risposta attiva al fine di prolungare ed aumentare i benefici derivanti dall’evento stesso. L’articolazione in tre studi, di carattere quantitativo, ha permesso di approfondire la conoscenza dell’oggetto di ricerca utilizzando diverse metodologie. Il primo studio ha indagato, attraverso un disegno cross-sectional, la struttura della Perceived Responses to Capitalization Attempts scale (PRCA) e, attraverso un disegno longitudinale, i benefici intrapersonali ed interpersonali che derivano dagli stili di risposta di capitalizzazione nel tempo. Il secondo e il terzo studio, attraverso il diary method, hanno approfondito il processo di capitalizzazione attraverso l’introduzione di due aspetti innovativi nel processo: la differenziazione tra eventi positivi interni ed esterni alla relazione e la distinzione tra modalità di comunicazione più o meno esplicita dell’evento positivo. Nello specifico, il secondo studio si è focalizzato sui primi due elementi del processo di capitalizzazione (gli eventi positivi e i tentativi di capitalizzazione), mentre il terzo studio ha riguardato gli ultimi due elementi del processo (le risposte ai tentativi di capitalizzazione e la percezione di responsività da parte del/della partner).
The present research project focused on capitalization, that is the process through which people share good news with the partner, who in turn responds in an “active” way to maximize the benefits of the event. Three different studies approached this research object through different methodologies. The aims of the first study were to investigate, through a cross-sectional design, the structure of the Perceived Responses to Capitalization Attempts (PRCA) scale and to examine, through a longitudinal design, the intrapersonal and interpersonal benefits arising from the capitalization responses over time. The second and the third study, through diary methods, attempted to investigate two unexplored aspects of the capitalization process: the differentiation of the type of positive events (internal vs. external to the couple) and the distinction of the type of communication of the event (implicit vs. explicit). Specifically, the second study focused on the first two elements of the capitalization process (positive events and attempts to capitalization), while the third study concerned the last two elements of the process (responses to capitalization attempts and responsiveness).
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Leeuw, Johannes Philippus de. "Breech presentation vaginal or abdominal delivery? a prospective longitudinal study /." [Maastricht : Maastricht : Rijksuniversiteit Limburg] ; University Library, Maastricht University [Host], 1989. http://arno.unimaas.nl/show.cgi?fid=5451.

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Söderfjell, Stefan. "Musculoskeletal pain, memory, and aging : Cross-sectional and longitudinal findings." Doctoral thesis, Umeå universitet, Psykologi, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-588.

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The general aim of the thesis was to investigate potential differences in memory performance between participants across the adult life span with and without self-reported musculoskeletal pain. Chronic musculoskeletal pain is a major health related problem in our society. A common complaint related to chronic pain is about cognitive difficulties in attention, memory, and decision making. A number of studies have demonstrated that people with pain also perform wors on tasks measuring, for example episodic memory, semantic memory, and working memory. The present thesis aimed at replying these findings, by using a non-clinical population based sample. the potential differences in memory performance between people with and without pain were examined across the adult life span, in order to disentangle potential pain by age interactions. This was made by using both cross-sectional and longitudinal data. Study I aimed at studying differences in episodic memory performance, semantic memory performance, and implicit memory performance, between people with and without musculoskeletal pain. Differences were found for all three memory systems, but disappeared after controlling for years of formal education. In Study II an extension of the first study was made, in which performance on a range of cognitive tests were analysed. General differences were demonstrated , but yet again, years of education together with depression ruled out the effects. The most robust effects were found for word comprehension and construction ability. Finally, Study III used 5- and 10 year follow up studies to examine change over time in cognitive performance as a function of pain. The main finding from this study was that semantic memory for the oldest is impaired over time as a function of pain. An additional analysis showed similar patterns, regardless of age, for construction ability.
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Price, Sally E. "Older female caregivers : cross-sectional and longitudinal analysis women's health /." [St. Lucia, Qld.], 2006. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19332.pdf.

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Books on the topic "Longitudinal section"

1

Ochi, Simeon C. U. One-dimensional wave propagation in rods of variable cross section: A WKBJ solution. Cleveland, Ohio: Lewis Research Center, 1987.

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Teikari, Ismo. Poisson mixture sampling in controlling the distribution of response burden in longitudinal and cross section business surveys. Helsinki: Helsinki School of Economics and Business Administration, 2001.

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Marzougui, Dhafer, Cing-Dao “Steve” Kan, Umashankar Mahadevaiah, Fadi Tahan, Christopher Story, Stefano Dolci, Alberto Moreno, Kenneth S. Opiela, and Richard Powers. Evaluating the Performance of Longitudinal Barriers on Curved, Superelevated Roadway Sections. Washington, D.C.: Transportation Research Board, 2019. http://dx.doi.org/10.17226/25290.

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Muralidharan, Rajalakshmi. A comparison of the developmental norms of Indian children as obtained by the cross-sectional and longitudinal studies, 2 to 5 years. New Delhi: National Council of Educational Research and Training, 1986.

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Moretti, Enrico. Estimating the social return to higher education: Evidence from longitudinal and repeated cross-sectional data. Cambridge, MA: National Bureau of Economic Research, 2002.

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Routamaa, Vesa. Organizational growth and structuring: Cross-sectional and longitudinal analyses in firms of the Finnish clothing industry. Vaasa: University of Vaasa, 1990.

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Mumford, Michael D. Patterns of life history: The ecology of human individuality. Hillsdale, N.J: L. Erlbaum Associates, 1990.

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Cleft palate children and intelligence: Intellectual abilities of cleft palate children in a cross-sectional and longitudinal study. Lisse [Netherlands]: Swets & Zeitlinger, 1985.

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Nordin, B. E. C. Metabolic consequences of the menopause a cross-sectional, longitudional, and intervention study on 557 normal postmenopausal women. New York: Springer, 1987.

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Ltd, Onslow Auctions. Titanic: The highly important longitudinal sectioned plan of the ship used at the English enquiry, June 1912, anda collection of rare Titanic ephemera : at the Park Lane Hotel Ballroom, Piccadilly, London W1 : for sale by auction, Wednesday, 15 April, 1987. London: Onslow Auctions, 1987.

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Book chapters on the topic "Longitudinal section"

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Ferrer, Emilio, Steven M. Boker, and Kevin J. Grimm. "Introduction and Section Overview." In Longitudinal Multivariate Psychology, 1–6. New York, NY : Routledge, 2019. | Series: Multivariate applications series |: Routledge, 2018. http://dx.doi.org/10.4324/9781315160542-1.

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Göppinger, Hans. "Comparisons in the Longitudinal Section." In Life Style and Criminality, 195–218. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71322-4_13.

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(Stevanovic) Hedrih, Katica R. "Forced Longitudinal Fractional Type Vibrations of a Rod with Variable Cross Section." In Developments and Novel Approaches in Nonlinear Solid Body Mechanics, 325–43. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50460-1_18.

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Fomin, A. A., V. G. Gusev, and A. R. Sadrtdinov. "Assurance of Accuracy of Longitudinal Section of Profile Surfaces Milled at High Feeds." In Proceedings of the 4th International Conference on Industrial Engineering, 527–36. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95630-5_55.

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Gong, Yifan, Wenqi Ding, Chenjie Gong, and Yuelang Jin. "A New Form of Longitudinal Joint of Large Cross-section Segmental Tunnel Linings." In Proceedings of GeoShanghai 2018 International Conference: Tunnelling and Underground Construction, 292–99. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0017-2_29.

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Verma, Neeraj, and Beena D. Baloni. "Calibration of Reference Velocity and Longitudinal Static Pressure Variation in the Test Section of an Open-Type Subsonic Wind Tunnel." In Advances in Applied Mechanical Engineering, 107–14. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1201-8_12.

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Berg-Schlosser, Dirk. "Cross-Sectional and Longitudinal Analysis." In Authoritarianism and Democracy in Europe, 1919–39, 285–315. London: Palgrave Macmillan UK, 2002. http://dx.doi.org/10.1057/9781403914231_14.

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Kim, Seoyoun. "Cross-Sectional and Longitudinal Studies." In Encyclopedia of Gerontology and Population Aging, 1–4. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-69892-2_576-1.

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Owens, Christopher S., Diane Crone, Christopher Gidlow, and David V. B. James. "Observational (cross-sectional and longitudinal) studies." In Research Methods in Physical Activity and Health, 74–79. Abingdon, Oxon ; New York, NY : Routledge, 2018.: Routledge, 2018. http://dx.doi.org/10.4324/9781315158501-8.

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Cohen, Louis, Lawrence Manion, and Keith Morrison. "Surveys, longitudinal, cross-sectional and trend studies." In Research Methods in Education, 334–60. Eighth edition. | New York: Routledge, 2018.: Routledge, 2017. http://dx.doi.org/10.4324/9781315456539-17.

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Conference papers on the topic "Longitudinal section"

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Johnson, Richard, Steve Soltis, Jim Blaker, and Barry Wade. "Transport Airplane Fuselage Section Longitudinal Impact Test." In Aerospace Technology Conference and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1988. http://dx.doi.org/10.4271/881377.

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Wang, Lin, and Lingjuan Chen. "Optimization of Gradient in Longitudinal Section Design of Railroads." In Second International Conference on Transportation Engineering. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41039(345)81.

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Zemlyakov, V. V., and G. F. Zargano. "Mode Transformers on Longitudinal Diaphragms in Waveguides of Complex Cross Section." In 2007 International Kharkiv Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW). IEEE, 2007. http://dx.doi.org/10.1109/msmw.2007.4294768.

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Schraml, Rudolf, Johann Charwat-Pessler, and Andreas Uhl. "Temporal and longitudinal variances in wood log cross-section image analysis." In 2014 IEEE International Conference on Image Processing (ICIP). IEEE, 2014. http://dx.doi.org/10.1109/icip.2014.7026154.

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Yu, Yang, Si Ma, and Lingjuan Chen. "Optimization of Longitudinal Section Design of Railway Coal Logistics Yard in Xinjiang." In 2010 International Conference on Optoelectronics and Image Processing (ICOIP). IEEE, 2010. http://dx.doi.org/10.1109/icoip.2010.191.

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Lachhab, Ahmed, and Andrew Dutton Van Woert. "A TRANSVERSAL AND LONGITUDINAL MONITORING OF 4 HEADWATER STREAMS USING WATER QUALITY INDEX AND HYDROGEOCHEMICAL ANALYSES." In 53rd Annual GSA Northeastern Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018ne-310480.

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Ren, Huilong, Qingyue Zhang, Xueyun Jiang, and Yumeng Hu. "Design of Ship Weight Reduction Based on Reliability Analysis of Longitudinal Bending Strength." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41765.

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As the focus of the structural design, the form and dimension of components in the mid-ship section reflect the general characteristic of the whole ship, thus playing a significant role in the weight and structural strength of the whole ship. However, traditional deterministic methods of structural strength assessment will bring excessive safety margin, which will lead to excessive weight of ship structure. In this paper, the optimization model was built in view of ship longitudinal bending strength reliability analysis by MATLAB software. With the information of wave loads forecast and that of the section bending strength, the failure probability was obtained. Objective function was the weight of mid-ship section, and optimization variables were the size of sectional components, and the constraints were reliability index and component size limits were required by relevant norms. Combined with the optimization model, genetic algorithm toolbox integrated in MATLAB was applied to study mid-ship section optimization. Results of the examples showed that in the case that the limiting conditions were satisfied, the weight of mid-ship section was reduced to a certain extent, which meant that this method was effective for mid-ship section optimization.
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Choi, Byung H. "Buckling Analysis Of Stiffened Plates With Closed-Section Longitudinal Stiffeners Under Axial Compression." In The Seventh International Structural Engineering and Construction Conference. Singapore: Research Publishing Services, 2013. http://dx.doi.org/10.3850/978-981-07-5354-2_st-196-558.

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Tcherni, V. P. "Technique of Estimation of Actual Strength of a Gas Pipeline Section at its Deformation in Landslide Action Zone." In 1996 1st International Pipeline Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/ipc1996-1938.

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The technique is given which permit to determine stress and strain state (SSS) and to estimate actual strength of a section of a buried main gas pipeline (GP) in case of its deformation in landslide action zone. The technique is based on use of three-dimensional coordinates of axial points of the deformed GP section. These coordinates are received by full-scale survey. The deformed axis of the surveyed GP section is described by the polynomial. The unknown coefficients of the polinomial can be determined from the boundary conditions in points of connection with contiguous undeformed sections as well as by use one of minimization methods at mathematical processing of full-scale survey results. The received form of GP section’s axis allows to determine curvatures and, accordingly, bending moments along all the length of the considered section. The account for the influence of soil resistance to longitudinal displacements of a pipeline is used to determine longitudinal forces. Received by this technique values of bending moments and axial forces as well as known value of internal pressure are used to receive all necessary components of actual SSS of pipeline section and to estimate its strength by elastic analysis.
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Nabian, M., A. Vaziri, M. Olia, and H. Nayeb-Hashemi. "The Effects of Longitudinal and Circumferential Cracks on the Torsional Dynamic Response of Shafts." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65593.

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Turbo generator shafts are manufactured through the extrusion process. This results in formation of weak planes along the extrusion direction. Under service loading (e.g. cyclic torsion due to electrical line faults), large longitudinal cracks often form in these shafts before the appearance of any circumferential cracks. The presence of these cracks could severely compromise the shaft resonance frequencies. Here, we investigated the dynamic response of solid turbo generator shafts with longitudinal and circumferential cracks. The longitudinal cracked section of the shaft section was modeled as a shaft with reduced effective torsional rigidity. The effective torsional rigidity was found to be a function of ratio of crack depth to the shaft radius only. The circumferential cracked section was modeled as a torsional spring, with the torsional spring constant determined using fracture mechanics principles. It was found that the resonance frequency of the shaft may be little affected by the presence of a longitudinal crack. The resonance frequencies of the shaft with the circumferential crack depend on the crack length and its location. The effects of crack surface interactions for both longitudinal and circumferential cracks were also investigated. For circumferential cracked shafts, the sever crack surface interaction results in the peak response frequency approaches to that of un-cracked shafts. However the frequency where the peak response occurs for a longitudinally-cracked shaft generally exceeds that of un-cracked shaft first resonance frequency.
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Reports on the topic "Longitudinal section"

1

Yang, Ziye, Hongzhou Deng, Chao Li, and Xing Ma. STRENGTH OF MULTIPLANAR LONGITUDINAL PLATE-TO-CIRCULAR HOLLOW SECTION (CHS) CONNECTIONS REINFORCED BY EXTERNAL RING STIFFENERS. The Hong Kong Institute of Steel Construction, December 2018. http://dx.doi.org/10.18057/icass2018.p.104.

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Servais, Marita. Overview of HRS Public Data Files for Cross-sectional and Longitudinal Analysis. Institute for Social Research, University of Michigan, 2010. http://dx.doi.org/10.7826/isr-um.06.585031.001.05.0023.2010.

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Gray, Wayne, and Carol Adaire Jones. Are OSHA Health Inspections Effective? A Longitudinal Study in the Manufacturing Sector. Cambridge, MA: National Bureau of Economic Research, January 1990. http://dx.doi.org/10.3386/w3233.

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Gray, Wayne, and Carol Adaire Jones. Longitudinal Patterns of Compliance with OSHA Health and Safety Regulations in the Manufacturing Sector. Cambridge, MA: National Bureau of Economic Research, December 1989. http://dx.doi.org/10.3386/w3213.

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Moretti, Enrico. Estimating the Social Return to Higher Education: Evidence From Longitudinal and Repeated Cross-Sectional Data. Cambridge, MA: National Bureau of Economic Research, August 2002. http://dx.doi.org/10.3386/w9108.

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Bound, John, Charles Brown, Greg Duncan, and Willard Rodgers. Measurement Error In Cross-Sectional and Longitudinal Labor Market Surveys: Results From Two Validation Studies. Cambridge, MA: National Bureau of Economic Research, March 1989. http://dx.doi.org/10.3386/w2884.

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Jdanov, Dmitri A., and Vladimir M. Shkolnikov. Assessment of cross-sectional and longitudinal components of a difference with an algorithm of contour replacement. Rostock: Max Planck Institute for Demographic Research, November 2014. http://dx.doi.org/10.4054/mpidr-wp-2014-010.

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Krueger, Alan. Are Public Sector Workers Paid More Than Their Alternative Wage? Evidence From Longitudinal Data and Job Queues. Cambridge, MA: National Bureau of Economic Research, January 1988. http://dx.doi.org/10.3386/w2500.

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Beddo, M. E. A measurement of. Delta. sigma. sub L (np), the difference between neutron-proton total cross sections in pure longitudinal spin states. Office of Scientific and Technical Information (OSTI), October 1990. http://dx.doi.org/10.2172/6784251.

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Marshall-Mies, Joanne C., Tanya B. Jupton, Christina M. Hirose, Michael A. White, Jacqueline A. Mottern, and Naina C. Eshwar. First Watch on the First Term of Enlistment: Cross-Sectional and Longitudinal Analysis of Data from the First Year of the Study. Fort Belvoir, VA: Defense Technical Information Center, January 2007. http://dx.doi.org/10.21236/ada463174.

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