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.
Results
Showing 1 to 20 of 65 for “"critical level"”.
-
The gravity wave-critical level interaction
… to examine various features of the gravity wave-critical level interaction and some of its possible roles in the dynamics of the atmosphere and the oceans. A linear inviscid steady state model is designed which, though singular at the critical level, illustrates certain important features of the …
-
Modules over affine lie algebras at critical level and quantum groups by Qian Lin.
… of representation of Kac-Moody Lie algebra at critical level with (some) fixed central character is also equivalent to a core of certain t-structure on the same triangulated category. Based on several geometric results developed by Bezurkvanikov et al. these two abelian categories turn out to …
-
The Beilinson-Bernstein localization theorem for the affine Grassmannian
… modules for the affine Kac-Moody algebra at the critical level, and the study of its center.
-
Long-range Propagation, Interaction, and Dissipation of Small-Scale Gravity Waves in the Mesosphere and Lower Thermosphere
… packets were chosen, such that one was prone to critical level filtering and the other reflection. These waves were propagated through (1) a background wind which was static and varied in the vertical and horizontal directions separately, (2) a background wind representing a medium-scale wave …
-
Intrinsic Differentiability and Intrinsic Regular Surfaces in Carnot groups
… a subset of G which is locally defined as a non critical level set of a C^1 intrinsic function. In a similar way, a k-codimensional intrinsic regular surface is locally defined as a non critical level set of a C^1 intrinsic vector function. Through Implicit Function Theorem, S can be locally …
-
Investment Strategies under Uncertainty: Theory and evidence of preemption in case of geographical market entrance
… of equilibrium strategies and expresses the critical level of asymmetry which separates the equilibrium regions. The analysis proves that the softer competition does not force the stronger firm to enter the market at his preemption point and as a consequence the rent equalisation between the …
-
Perceived stress among school administrative personnel
… perceived stress between three management levels, (4) there will be no significant differences in perceived stress between five time-period groups indicating the length of time a person has been with the system, and (5) there will be no significant difference in perceived stress between …
-
Gravity Wave/large-Scale Flow Interactions: A Comparison of Model Predication and Observation
… commonly used gravity-wave parameterizations: critical level filtering, linear saturation filtering, and diffusive filtering. A one-dimensional, time-independent model filters various gravity-wave spectra using the criteria for each of these parameterizations. Background wind profiles for …
-
Parathyroid hormone and calcium interactions in the periparturient mare
… between farms. The [Ca + Mg] test reached a critical level of 200 ppm 4.5 d pre-foaling, the [Ca] test 2 d pre-foaling. The [Ca + Mg] and [Ca] tests reached 250 ppm 2.5 and 1 d pre-partum, respectively. In short, serum Ca and PTH concentrations showed periparturient changes which reflected …
-
Diagnosis of Loblolly Pine (Pinus taeda L.) Nutrient Deficiencies by Foliar Methods
… closure. Nutrient concentrations relative to the critical level, optimal nutrient ratios, DRIS methodology, vector analysis, and changes in individual fascicle and total current year foliage weight/area were used to identify deficiencies. Phosphorus was repeatedly indicated as most limiting growth …
-
Impacts and correction of potassium deficiency in no-till and strip-till soybean and corn production
… generally near or below the current soil test K critical level of 130 mg per kg extractable K, based on sampling histories provided by the cooperators. Sampling in the spring of 2007 confirmed these soil test (ST) K levels. Soybean leaf tissue potassium levels in 2007 were less than the critical …
-
The Dialectical-Level Reflective Habits of Middle-Grade Teachers: A Phenomenological Study
… terms of reflection, Van Manen's (1977) highest level of reflection, the dialectical-level, is presented as a worthy aim for all educators. But should this type of reflection truly be a goal for all educators? This study sought to uncover the phenomenon of dialectical-level reflection. …
-
Unconventional story-weavers and their "Ecstatic Truth": An analysis of voice-overs in documentary film
… encourages audiences to engage on a more critical level. Finally, it argues that even a seemingly traditional narrator as seen in Jurshick‘sIt Should Have Been Nice After That can be unconventional and reveal an - ecstatic truth.
-
Influence of extreme velocities on dynamic cavity expansion
… usually occurring when loads on the body reach a critical level. In this thesis, dynamic cavity expansion (DCE) in solids is of particular interest. Cavity expansion has been studied extensively under quasi-static and dynamic loading conditions. However, the behavior of cavitation fields with …
-
Relationships among nutrient concentrations in corn (Zea mays L.) plants and extractable soil nutrients
… on all of the sites were below the reported critical level of 0.26% S in the earleaf at the early silk growth stage. It was concluded that this critical level may be too high for S deficiency symptoms of corn plants. The negative relationship between concentrations of Ca and K in whole corn …
-
Resetting microstructures and properties in TRIP-assisted advanced high strength steels
… could be completed within minutes following a critical level of deformation.
-
The Impact Dynamics of Weakly Charged Droplets
… experimentally and numerically. As the charge level is raised above a critical level of about 1% of the Rayleigh limit for representative impact conditions, the Maxwell stress overcomes the gas pressure buildup to deform the droplet bottom surface. A conical liquid tip forms and pierces Through …
-
Distortion Tolerant Fan Design
… created where the incidence is higher than the critical level at a near stall point in clean flow, but they decay as they propagate into the region where the incidence drops below the critical level. Stall was found to occur once the disturbances were able to propagate around the entire annulus …
-
Midlatitude sporadic-E layers
… irregularities are attributed in some cases to critical level effects and in others to fluid instabilities. The convergence of a meteor trail can, under some circumstances, account for localized enhancement of the electron density in the layer.
-
One-dimensional wave spectrum analysis of wind waves off Cape Town
… for the waters off Cape Town. At the 5% critical level, using the chi-square test, 3 out of 23 records tested were found to be non-Gaussian. No significant difference between the Gaussian properties of the deep and the shallow stations was found. Tests for stationarity applied to 3 …
Page 1 of 4