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 1661 for “"Lag"”.
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Bayesian treed distributed lag models
… or weekly throughout pregnancy. The distributed lag model (DLM) is a statistical method commonly implemented to estimate an exposure-time-response function by regressing the outcome on repeated measures of a single exposure over a preceding time period, for example, mean exposure during each week …
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Shear lag in truss core sandwich beams
… to investigate the possible influence of shear lag in the discrepancy between the theoretical and measured stiffness of truss core sandwich beams. In previous studies, the measured values of stiffness in loading have proven to be 50% of the theoretical stiffness during three point bending tests. …
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Effect of Cracking on Lag Bolt Performance
… load-slip characteristics of single-shear single lag screw connections subjected to monotonic lateral loading parallel to grain. Of particular importance was the comparison of experimental capacity and 5% offset yield load resistances to load resistances as predicted by the American Forest & Paper …
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"Shear Lag" em estruturas tubulares de paredes delgadas
… an energy approach where shear strains and shear lag effects are considered. Explicit expressions for transverse deflections and stesses are given for cantilever box beams. For tubular sections of more general geometries, like bridge sections, semi-explicit expressions are presented to several …
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Optimal Control of Linear Systems With Time Lag
Made available in DSpace on 2014-12-08T22:23:49Z (GMT). No. of bitstreams: 1 6511839.pdf: 1003966 bytes, checksum: 32bda55a6989341c8bfe9a189f68050e (MD5) Previous issue date: 1965
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Parametric Analysis of Fixed Lag Schedule Performance in Humans
… An emerging body of literature shows that a lag schedule is effective in increasing variable responding with human participants. However, results of some studies suggest that higher-order repetition may develop with lag schedules of reinforcement. The present study parametrically examined …
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The effects of jet-lag on hand-eye coordination
Digitized by Kansas Correctional Industries
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The effects of jet-lag on hand-eye coordination
Digitized by Kansas Correctional Industries
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Allt í lag fyrir Fiskidag : samfélagslegur þrýstingur eða sjálfboðin vinna?
… fyrir Fiskidaginn í mörg ár, ýmist á vegum félagasamtaka eða sem einstaklingar. Að auki var tekið viðtal við formann hestamannfélagsins Hrings en félagið hefur milligöngu um öflun sjálfboðaliða. Ennfremur var gagna aflað í skjalasafni Fiskidagins mikla. Helstu niðurstöður voru þær að …
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Multiple-model tracking with fixed-lag smoothing using imprecise information
… statistic, in spite of the smoothing lag. This thesis suggests that the manoeuvre be detected by testing the changes of the statistic of normalised squared innovations to give effective manoeuvre detection, based on Chen and Norton's (1986) detection by testing rapid parameter changes. …
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Decision-feedback equalisation with fixed-lag smoothing in nonlinear channels.
… processing, namely, the application of fixed-lag smoothing (FLS) to decision-feedback equalisation (DFE). The resultant algorithm was introduced in a recent paper and is termed herein the Fixed-Lag-Smoothing Decision-Feedback Equalisation (FLSDFE) algorithm. The motivation for studying the …
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Resonance Compensation of Large AC Drivetrains with Significant Time Lag
… tend to fall apart with large values of time lag. We investigate a modified LQR/LQE approach using a torque sensor as the feedback element. The result is a low order SISO filter that suppresses the effects of the torque ripple on the underdamped plant.
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Investigation of the shear lag coefficient for welded tension members
Shear lag is a non-uniform distribution of stress resulting when all cross sectional elements are not directly connected. This phenomenon renders the cross section only partially effective in resisting tensile loads. In this investigation, both experimental and analytical studies were conducted to …
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Lost in the cloud : cultural lag in the transition to eTextbooks.
The age of electronic textbook delivery is upon us. On the national level, the Department of Education is advocating eTextbook delivery in K-12. President Obama recommends that eTextbooks be employed in K-12 education by 2017. In economic hard times, these measures may make good sense. The cost of …
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Time-Lag in a Nonlinear Feedback System With a Time-Varying Parameter
Made available in DSpace on 2014-12-04T21:03:29Z (GMT). No. of bitstreams: 1 6202982.pdf: 3864258 bytes, checksum: 393fac0a3cda813ebaeeea20df8e3338 (MD5) Previous issue date: 1962
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Investigation of shear lag effect in high-rise buildings with diagrid system
… the framed tube building suffers from shear lag effects which cause a nonlinear distribution of axial stresses along the face of the building. A particular structural system called a diagrid system has caught the attention of the public. The diagrid system is not a new invention. The idea had …
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Rotor Blade Flap-Lag Stability and Response in Forward Flight in Turbulent Flows
… of random air turbulence on the coupled flap-lag motion of a helicopter rotor blade in forward flight is investigated. By assuming white noise turbulence and applying a special case of the stochastic averaging procedure, equations are developed which describe the stochastic first and second …
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Optimizing the touch tablet: the effects of lead-lag compensation and tablet size
… results in poor fine positioning ability. A lead-lag compensator which ameliorates this trade-off problem was developed. A lead-lag compensator is composed of a pure position gain component plus an additional velocity gain component. The results indicate that a lead-lag compensator greatly …
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The Effect of Control and Display Lag on UAS Internal Pilot Manual Landing Performance
<p>An important characteristic of UASs is lag because it can become a considerable challenge to successful human-in-the-loop control. As such, UASs are designed and configured to minimize system lag, though this can increase acquisition and operation costs considerably. In an effort to cut costs, …
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Stress resistance during the lag phase of wine fermentation and development of optimized yeasts
… multi-stress resistance during wine fermentation lag phase. We first characterized a set of commercialized wine yeast strains by focusing on stress factors typically found at this stage in red wines and in white wines. Temperature and osmotic stress had a drastic impact in lag phase for all …
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