Whole-body vibration (WBV) has been shown to enhance vertical jump performance. The purpose of this study was to determine which WBV intensity has the greatest effect on counter movement jump (CMJ) height and the duration of that affect. Forty-four participants, of varying training statuses, were tested. They participated in > 4 familiarization sessions, to eliminate learning effects. Participants performed a pre-test, followed randomly by one of 5 WBV intensities. Participants performed 3 maximal CMJs immediately, 5, and 10 min following treatment. The best performance was used and calculated as a percentage of the pre-treatment values. A multivariate model (treatment X time X gender) was used to analyze the data. The three-way interaction approached significance (p=0.053) and significance was found for all two way interactions. Females performed the best immediately following the 2.71g treatment (116.9 + 38.4%). Male participants did not increase their performance; however, they may require longer durations of vibration exposure to elicit effects. The differences between males and females may also indicate that the effects of WBV are dependent on strength, stiffness, and/or training levels. Future research should continue to systematically investigate the effects of vibration and participant characteristics on WBV and performance.Keywords: power, frequency, amplitude, training, potentiation, stiffness. / School of Physical Education, Sport, and Exercise Science

The study is concerned with how the hane effects on matching on mobile terminal antennas.

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As a part of loyalty programs in marketing or as incentive plans in companies, mediums have attracted considerable interest from marketing and organizational behavior researchers. Previous studies focused mainly on the effects of mediums on people’s choices and not on the role of moderators of a medium effect. The goal of the present thesis is to study two such moderators namely the numerosity of a medium and the cognitive complexity of mediums. In this study, after a thorough theoretical analysis, experimental data is analyzed to explore the relation between numerosity and cognitive complexity of a medium on individuals’ efforts. Our findings suggest that the medium effect is stronger when a medium is more numerous. Also, a more cognitively complex medium makes the mediums more effective.

Människor tenderar att minnas utförda uppgifter och återkalla dem bättre än när de enbart kodar samma uppgifter muntligt, även känd som enactment effekt. Syftet med den här studien var att undersöka om enactment effecten ökar under en ny inkodning som aldrig tidigare utförts inom paradigmet – Subject-Experimenter-Performed-Task. Sammanlagt medverkade 56 personer i studien, 32 killar och 24 tjejer i åldrarna 10-18. En grupp lågstadiebarn och en grupp gymnasieungdomar testades i VT, EPT, SPT och SEPT betingningar. Effekten av enactment har visat sig vara tydligast i SEPT inkodningen i både free och cued recall. Resultaten och eventuella köns- och åldersskillnader diskuteras utifrån episodic integration teorin.

A spherical indentation test is considered to be invalid if there is presence of a visible mark on the side of the sheet metal facing the anvil and exactly below the indentation. With the available standard loads of the conventional testers such as Brinell and Rockwell hardness testers, it is difficult to avoid this anvil effect while dealing with the sheet metals. The penetration depth increases when the thickness of the sheet is reduced at constant indentation pressures. The reason behind this is the change in mode of deformation. When the thickness of the sheet metal is reduced, and the indentation test is carried out on it, then the sheet metal experiences first indentation, then bending, followed by lifting of the sheet from the anvil which leads to a forging mode of deformation. The modes of deformation were identified using a finite element simulation of the indentation process. Plots of normalized depth against normalized thickness were created for the same indentation pressure, and a second order polynomial curve was fitted to the data points. The equation of this curve quantifies the anvil effect. The anvil effect was identified as a function of sheet thickness, indenter radius, indentation load and two material constants. A method to correct this anvil effect was also developed using the equation representing the anvil effect. It is possible to obtain the equivalent geometry of indentation without anvil effect. A MATLAB program is developed to obtain the parameters defining the curve for the anvil effect. Indentation test on a sheet using three different indenters and corresponding loads is required for this method. For accurate prediction of the equivalent depth of indentation, a lower limit of 10 % and upper limit of 80 % for penetration depth (ratio of depth of indentation and thickness of sheet metal) was identified for the spherical indentation testing on the sheet metals. Verification of the curve fitting model was carried out with the indentation experiments on commercially available Niobium, Al2024-T3, Al7075-T6 and 1020 low carbon steel sheets. These tests show good agreement between fit, prediction, and experiments for the anvil effect.

A variety of organic reactions provide experimental observations that are not explained by current models of reactivity and selectivity. This dissertation describes a combination of experimental and theoretical studies of such reactions. In the ene reaction of singlet oxygen with tetramethylene, it is found that standard statistical rate theories fail to account for the observed kinetic isotope effects, particularly with regard to their broad temperature independence. Dynamics trajectories are found to account for the observed isotope effects. In the dimerization of cyclopentadiene, novel "dynamic" isotope effects are observed on the 13C distribution in the product, and a method for the prediction of these isotope effects is developed here. In the cycloaddition of diazomethane with dimethylfulvene, it is found that the current model of the mechanism as a [6 + 4] cycloaddition is incorrect, and a new mechanism is proposed. Isotope effects have been measured for the recently reported unusual "on water" quadricyclane cycloadditions, and the implications of these observations toward the mechanism are discussed.

The present work proposes a new computational algorithm for analyzing Morton Effect using a Successive Iterative Synchronous Response Algorithm (SISRA). Previous studies on the Morton Effect were based on Eigen or Nyquist analysis for stability studies and predicted only an onset speed of instability. The outcome of SISRA is the convergence of response to a steady state orbit in a finite number of iterations. A progressive increase in the response with increasing running speed indicates the former instability. SISRA predicts both the synchronous response for the speed range of concern plus the speed where the response becomes divergent. SISRA is implemented in a Timochenko-beam-based finite-element rotordynamics software suite. SISRA analyzes the Morton Effect as a synchronous response problem with excitations from: (1) mechanical imbalance, (2) induced thermal bent shaft moments, and (3) mechanical imbalance that is induced by thermal bow. A general elliptical orbit can be decomposed into the sum of forward and backward circular orbits. As input, SISRA requires that, at a specified speed, equilibrium position, and orbit: (1) the predicted maximum differential temperature, and (2) the angle between hot spot (position of maximum temperature) and position of minimum film thickness. Two examples from the published literature are considered. SISRA predicted higher vibration levels, even before the motion diverges due to Morton Effect. In some cases, the synchronous response of the system due to Morton Effect is orders of magnitude greater than the response due only to mechanical imbalance. The combined effects of: (1) mechanical imbalance with induced thermal bent shaft moments, and (2) mechanical imbalance with thermally induced mechanical imbalance are also studied. The impact of induced thermal bent shaft moments is found to be greater than the mechanical imbalance induced by thermal bow. A parametric investigation on the impact of the changes of (1) bearing length to diameter ratio, (2) reduced viscosity of the lubricant, (3) bearing radial clearance to radius ratio and (4) overhung mass magnitude is performed to consider their respective impacts on synchronous response. Based on the available input data and the cases considered, reducing viscosity and reducing the overhung mass are found to be the best remedies to alleviate problems arising from the Morton Effect.

Beer Game developed by Slaon School of Management didn¡¦t add price variable into the game. It¡¦s reasons were : (1) As long as there is time delay, it will induce dynamic complexity. (2) If there is price variable, maybe we can¡¦t observe patterns and structure. In the research, we try to add price variable into Beer Game to verify the statement made by Slaon School of Management. Besides, we can explore whether it will influence players¡¦ decisions or not. The learning effects are also we concern about. After a few experiment, althought bullwhip effect is still existing, it¡¦s not much apparent then before. Besides, players are affected by price variables. From discussions after the game, we can find players lack systems thinking, they have misperceptions of feedback and get used to put blame on others. Those learning effects are the same as traditional beer game induced. However, beer game with price variable can conclude many behaviors made by players. To contrast with the panic buying and stock conditions, such as respirators panic buying in 2003, toilet paper price rise caused by pulp cost increased in 2004, players can simulate the real world throuth playing the game. They can reflect and learn, then bring this experience into real life.