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Now showing items 5531-5550 of 9013
Measure-preserving dynamical systems on R3 with all trajectories bounded
(2017-11-16)
We present here constructions, both smooth and piecewise-linear, of non-singular, measure-preserving dynamical systems on R3, with each trajectory contained in a bounded set. In the smooth case, we use a sequence of nested ...
Measurement and Modeling of Damage in Mechanically Cycled Lead Free Solders
(2022-06-29)
Solder joints in electronic packages often experience fatigue failures due to cyclic mechanical stresses and strains in fluctuating temperature environments. This cyclic loading of the solder is induced by mismatches in ...
Measurement Invariance of Posttraumatic Stress Disorder Symptoms Across Three Civilian Trauma Types
(2012-07-19)
The factor structure of posttraumatic stress disorder (PTSD) remains the subject of intense investigation. The DSM three-factor conceptualization of PTSD has not been empirically supported; rather, two four-factor models ...
Measurement of Absorption Coefficient of Road Surfaces Using Impedance Tube Method
(2005-08-15)
The absorption coefficient of dense and porous road surfaces has been measured using core samples with 4 and 6-inch diameter impedance tubes. The 6-inch tube allows the absorption of a large core sample surface to be ...
Measurement of Alcohol Use at a Historically Black College/University (HBCU)
(2012-07-09)
Previous studies have reported that African-American students attending HBCUs consume less alcohol and experience fewer negative consequences compared to students attending other public colleges and universities (Fowler, ...
Measurement of Emotional Expressiveness in Preschool Children: Comparing Direct Assessments of Affect Expressiveness with Measures of Social Competence
(2007-05-15)
The primary purposes of this study were to document the frequency and rate of affect expression for preschool children engaged in dyadic play, to determine the contextual constraints on such affect expression imposed by ...
Measurement of mineral elastic modulus through nanoindentation
(2017-04-21)
Minerals are the main component of Earth’s crust and mantle. For our planet, the data we have on the Earth’s interior are obtained from the measurement of seismic wave velocity. Measurement in laboratory of mineral’s elastic ...
Measurement of Reliable Indentation Elastic Modulus in Brittle Materials from Berkovich Nano Indentation
(2016-08-01)
Determining the elastic modulus of brittle materials from unloading segments during standard indentation testing is complicated by surface generations of cracks and other defects form. This work describes a method to ...
Measurement of the phase space distribution in a complex plasma
(2012-04-18)
The development of a diagnostic technique that allows measurement of the six dimensional phase space distribution for the dust component of a plasma system is presented. In the course of the measurement and analysis ...
Measurement of the thermal properties of a weakly-coupled complex (dusty) plasma
(2006-12-15)
Knowledge of the velocity space distribution function facilitates the characterization of the thermal and dynamical properties of a system. In this work, a comprehensive series of experiments and numerical simulations are ...
Measurements and Modification of Sheared Flows and Stability on the Compact Toroidal Hybrid Stellarator
(2012-04-25)
Sheared flows arising from spatially inhomogeneous, transverse electric fields are common phenomena found in space, laboratory, and fusion plasmas. These flows are a source of free energy that can drive or suppress ...
Measurements of the thermal expansion and heat capacity of metals by electromagnetic levitation
(2006-08-15)
Electromagnetic levitation is a very useful non-contact melting technique that can be exploited for measurements of thermophysical properties of many reactive metals and alloys. This study focused on thermal expansion and ...
Measuring and modeling stormwater runoff from an interstate in a rural/forested watershed
(2016-12-12)
In hydrological research, roadways are often defined simply as an increased impervious portion of a watershed or a flow blocking structure. The research presented in this dissertation examines the effects of highway crossings ...
Measuring and modeling the impact of roadway runoff on a headwater tributary of the Cahaba River
(2015-07-24)
Stormwater runoff from highways has been a relevant focus of study both in terms of its characterization during construction phases as well as during the operational years. Highways have been thought to have adverse impacts ...
Measuring Attachment in Adolescence: A Validation of the IPPA in Adolescents with Illegal Sexual Behaviors
(2017-07-25)
The Inventory of Parental and Peer Attachment (IPPA; Armsden & Greenberg, 1987) is a
well-established measurement instrument for assessing attachment during adolescence. However,
the factor structure of the measure has ...
Measuring change blindness in specific phobia: A replication
(2006-12-15)
People often fail to notice changes in visual scenes, a phenomenon know as --Y΄change blindness.‘ At least some change blindness results because relevant changes in scenes occur during eye movements. The flicker paradigm ...
Measuring Effectiveness in Alabama's Community Colleges as a Function of Institutional Expenditures
(2018-04-24)
With state resources for higher education under constant pressure, it is critical to understand how to maximize institutional performance while being economical with resource allocation. Future workforce demands will call ...
Measuring Faculty Productivity: Towards a Unified Methodology at the Departmental Level
(2015-12-04)
A disproportionate number of departmental and faculty productivity indices in higher education rely solely on research. Productivity in other areas of faculty workload areas, like teaching and institutional and community ...
Measuring leadership competence in group therapy: Development of an adapted version of the Group Leadership Questionnaire
(2017-07-25)
To contribute to the active efforts of increasing consistency and availability of group psychotherapy training, the present study sought to adapt a measure of group leadership styles into a brief, written measure of knowledge ...
Measuring Motivation and Tendencies Towards Self-directedness Within Information Technology in an Academic Workplace
(2011-11-30)
Advances in industry have placed a high demand on the workforce to maintain constant
training. Some of the concerns that face administrators and supervisors are the best methods to
keep current with new technology, how ...