Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 84 for “"linear trend"”.
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Construction and Analysis of Linear Trend-Free Factorial Designs Under a General Cost Structure
When experimental units exhibit a smooth trend over time or in space, random allocation of treatments may no longer be appropriate. Instead, systematic run orders may have to be used to reduce or eliminate the effects of such a trend. The resulting designs are referred to as trend-free designs. We …
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Linear Trend Analysis: Implications for a Structural Fracture System and Applications of Subsurface Fluid Migration, Northwest Arkansas and Eastern Oklahoma
<p>Lineaments are mappable, simple or composite linear or curvilinear features of the Earth’s surface longer than one mile, which differ from the patterns of adjacent features and are presumed to reflect subsurface phenomenon such as faults and fractures. The usage of the term refers to the …
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Construction and properties of Box-Behnken designs
… in time or space and in which there may exist a linear trend effect. For this situation, one wants to find appropriate run orders for obtaining a linear trend-free Box-Behnken design to remove a linear trend effect so that a simple technique, analysis of variance, instead of a more complicated …
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Comparison of Trend Detection Methods
Trend estimation is important in many fields, though arguably the most important applications appear in ecology. Trend is difficult to quantify; in fact, the term itself is not well-defined. Often, trend is quantified by estimating the slope coefficient in a regression model where the response …
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Comparison of Trend Detection Methods
Trend estimation is important in many fields, though arguably the most important applications appear in ecology. Trend is difficult to quantify; in fact, the term itself is not well-defined. Often, trend is quantified by estimating the slope coefficient in a regression model where the response …
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The effects of broccoli on the excretion of urinary conjugates
… and amino acid conjugates. A significant linear trend was observed over the six-day broccoli diet treatment for both urinary mercapturate (P<0.005) and sulfoconjugate (P<0.0001) excretion. The linear trend for the mercapturate excretion was in a dose-dependent manner, resulting in a 1.3 …
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Pegmatitic muscovites: effect of composition on optical and lattice parameters
… optically, and structurally. Multiple linear regressions were performed on these data to determine the correlations of the compositional components with both the optical properties and the unit cell parameters. The results of this study indicate refractive indices increase to the extent …
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RUOLO DEI POLIMORFISMI GENETICI DEL IL-28B NELLE COMPLICANZE BILIARI POST-TRAPIANTO DI FEGATO NELL'ADULTO
… (22/71 C/C vs 16/85 C/T vs 2/18 T/T, p=0.029 for linear trend). Tale associazione è apparsa più significativa nei pazienti in terapia immunosoppressiva con Ciclosporina (10/20 C/C vs 7/29 C/T vs 1/6 T/T, p=0.047 for linear trend) rispetto ai pazienti in terapia con Tacrolimus (12/51 C/C vs 9/56 …
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Attitudes of American School Counselor Association Members toward Utilizing Paraprofessionals in School Counseling
… lowest. Furthermore the PI found a significant linear trend for counselor-student ratios to decrease as school level increased. The participants' reported mean percentage of time involved in direct counseling services (61.48%) fell significantly below the ASCA recommended 70%. Elementary …
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Instrument Pilot Skill Acquisition in the Early Phases of Flight Training Using an Advanced Cockpit Display System
… Workload data across trials indicated a negative linear trend, with a significantly lower level of workload on the synthetic vision display compared to conventional instruments. Levels of performance were significantly higher in the SVS condition, and revealed a quadratic trend, supporting the …
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Modeling the Thermal and Electrical Properties of Different Density Sintered Binder Jetted Copper for Verification and Revision of The Wiedemann-Franz Law
… by 1mm where printed. The data shows a strong linear trend linking electrical resistivity to the density ratio of the copper. Within the thermal conductance measurement, a lot more variability was seen within the three different prints. The 70% density ratio prints saw a large 13% spread in …
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A Vegetational Continuum of the Upland Forests of Three Counties in South Central Missouri
… diversity, elevation, and soil pH of each stand. Linear regression and analysis of variance were used when applicable to test the significance of these relationships. Results indicated no significant relationship between exposure and continuum numbers. However, significant negative linear trends …
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Comparing the Development of Intragroup Trust and Performance Feedback Influence in Interdisciplinary and Homogeneous Teams
… Although trust displayed an overall positive linear trend independent of team type, Cycle 1 performance feedback contributed to the trust trajectory. Additionally, considerations for operationalizations of information sharing and team performance are discussed in light of findings.
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Estrategias de trading con Time Series Momentum
… Momentum trading signals generated by tting a linear trend on the asset price path maximise the out-of-sample performance in small holding periods while minimising the portfolio turnover, hence dominating the ordinary momentum trading signal in literature, the sign of past returns. Regarding …
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Presnosť určenia parametrov exoplanét z ich tranzitov
… coefficients were computed, showing that a linear trend has the...
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The Altman corporation failure prediction model : applied among South African medical schemes
… 82% accuracy rate and 17.9% error rate. A linear trend line inserted in the graph shows the accuracy improving from 72% to 91% between the period 2003/2004 to 2011/2012. This outcome is consistent with the conclusion in previous studies (Aziz and Humayon, 2006: 27) that showed the accuracy …
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Investigating the Relationship Between Objective and Subjective Measures of Physical Demand During Passive Exoskeleton Use
… The results demonstrated a general positive linear trend between nEMG and RPE for both the individual and mean results. Substantial inconsistencies emerged when considering the influence of gender, exoskeleton type, and task conditions on the relationship between nEMG and RPE. These …
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Trend Analysis of Automobile Collision Amongst 15-19 year olds in Virginia, 2000-2004
… to nineteen (15-19) year olds looked into the trend analysis over a five (5) year period of 2000 to 2004. Trend analysis is usually done for aggregates of all injuries—either intentional or unintentional injuries, or both. The primary objective of this research study was to examine the trend in …
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Drought Resistance and Resilience of Non-native vs. Native Grasses in the Northern Tallgrass Prairie
… for all three experiments indicated that a linear trend in the data was observed from the 50% treatment up to the 125% treatment; Experiment I (p = 0.01), Experiment II (p =0.009), and Experiment III (p < 0.0001), and there was a significant difference between the treatments; Experiment I (p …
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The Effects of Problem-Based Learning on Interest in Mathematics for Elementary Students across Time
… and engagement. Results indicate a negative linear trend for composite and sub factors of interest across time except value. The PBL intervention did not moderate the change in interest across time. Conclusions, possible limitations, and future directions are discussed.</p>
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