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Objective: To assess the effect of finishing and polishing direction on the marginal adaptation of resin-based composite restorations. Methods: Forty human molars were collected and sectioned along their mesio-distal axis. Buccal and lingual enamel surfaces were flattened and a triangular preparation (0.87mm deep and 3mm wide) representing two 30° bevels was achieved. Specimens (n=20/per group) were randomly assigned in groups and restored with two resin-based composite materials: a nanofilled (Filtek Supreme Ultra)(FSU) and a microhybrid (Point4)(PT4) and two finishing/polishing techniques: a series of Sof-Lex discs (SL) and a sequence of diamond bur/dark-orange SL/rubber polishers (HiLuster). On each specimen, both margins were finished and polished with the same technique, one from the resin-based composite to the tooth structure (C-T) and the other from the tooth structure to the resin-based composite (T-C). Replicas were made for FeSEM observation (200X) and quantitative margin analysis was performed based on four defined marginal quality criteria. Comparisons were made between polishing directions (paired-samples t-test, Wilcoxon signed-rank test), between resin-based composites and between polishing techniques (two-sample t-test and Wilcoxon rank sum test) Results: Significant differences were found between polishing directions (p<0.05). Data showed more continuous margins, less marginal irregularities and less gaps with the polishing direction C-T than T-C except for one group (FSU/SL) with marginally significant difference in gaps (p=0.0537). Differences between the two resin-based composites and the two polishing techniques seemed to be dependent on certain combinations of resin-based composite, polishing technique and polishing direction. Conclusion: Within the limitations of this in vitro study, polishing from resin-based composite to tooth structure (C-T) leads to better marginal adaptation than polishing from tooth structure to resin-based composite (T-C).

INTRODUCTION: Sensory systems within the head provide us with rich perceptual information and may require complex control of the head during locomotion when changing direction. Head position in space is maintained by head on trunk motion as well as lower extremity kinematic modifications, such as increased knee flexion and increased stance time in order to facilitate shock attenuation and reduce vertical CoM displacement. It has been established that the body organizes its degrees of freedom of the trunk, pelvis and lower extremities differently during anticipated and unanticipated sidestepping, which raises the question of how these modifications affect head control during change of direction tasks. METHODS: Fourteen collegiate soccer players performed 7 anticipated and 7 unanticipated sidestepping tasks. Kinematic data were recorded using an 11-camera motion capture system (Qualysis, Inc., Gothenburg, Sweden) sampling at 240 Hz. Head and trunk orientation was quantified at penultimate toe off. A modified vector coding analysis was used to quantify the coordination and coordination variability between the head and trunk during the anticipated and unanticipated side-stepping trials. Differences in head-trunk orientation and coordination pattern frequencies were assessed with a paired t-test with an . One-dimensional statistical parametric mapping (SPM1D) was used to compare coordination variability waveforms. RESULTS: The head (p < 0.01, ES = 0.82) and trunk (p < 0.05, ES = 0.59) were significantly more oriented toward the new travel direction during anticipated compared to unanticipated sidestepping. No significant differences in transverse or sagittal plane coordination were observed throughout the change of direction stride. However, during unanticipated sidestepping we observed significantly reduced in-phase head-trunk coordination during the preparatory phase in the sagittal (p = 0.04, ES = 0.63) and transverse (p = 0.02, ES = 0.73) planes but did not find differences in the stance or post-transition phases. Coordination variability did not differ between anticipated and unanticipated conditions. Irrespective of planning time, greater transverse plane coordination variability was observed during the flight phases compared to the stance phase (p < 0.01) of the change of direction stride. Sagittal plane coordination variability was significantly greater during the preparatory phase than the stance phase (p < 0.01), and stance phase coordination variability was significantly greater than post-transition phase variability (p < 0.01). SIGNIFICANCE: Our results suggest differences in coordination between the head and trunk between anticipated and unanticipated sidestepping emerge during the preparatory phase of the change of direction stride, from penultimate step toe off to transition step heel strike. Anticipated and unanticipated sidestepping are different tasks, but individuals are consistent in the way the head-trunk coupling is controlled. Relating variability to task goals may allow for a better understanding of the beneficial aspects of variability observed at the head.

Diploma thesis describes direction finding principles for passive localization of emitting source. Direction finding system with one rotating antenna was chosen with triangulation calculation of emitter position. Input parameters are position of measurement point and direction of maximum signal receiving level. A suitable digital compass module and GPS receiver module for this measurement was chosen. For this purpose was created a graphic user interface, which allow user to communicate with external devices and control spectrum analyzer. Results of measurements are displayed at map, together with area of possible positions of transmitter. Receiving Yagi antenna is placed on rotator and whole system is placed on roof of car. Whole system was construct and results of measurement are discuss here.

The diploma work occupy oneself problems of interdepartmental directions and focuses on their creation. The main task of this work is to design some directions from scope of accounting for the selected company.

The growing traffic and global bandwidth shortage for broadband cellular communi-cation networks has motivated to explore the underutilized millimeter wave frequencyspectrum for future communications. Fifth generation (5G) is the key to empow-ering new services and use cases for people, businesses, and society at large. Withunprecedented speed and flexibility, 5G carries more data with greater reliability andresponsiveness than ever before. As 5G new radio (NR) begins to take full advantageof the high-band spectrum, i.e, the millimeter wave frequencies, new challenges arecreated. While millimeter waves offer broader bandwidth and high spatial resolution,the drawback is that the millimeter waves experience higher attenuation due to pathloss and are more prone to absorption, interference and weather conditions, thereforelimiting cell coverage.This thesis is an attempt to increase the 5G cell coverage by implementing ananalogue beamforming router in a cell. Beamforming router acts like a relay, whichextends the range of the 5G cell whenever needed, according to the position of theUser Equipment (UE) based on the information received from the gNodeB (gNB,logical 5G radio node). This thesis is investigating the downlink Signal-to-Noise Ratio(SNR) gain and thus possible increase in the data rate. Simulation and validation ofthe overall performance is done using MATLAB. The outcome of this study may beused to increase the 5G cell coverage if it is implemented in a real.

El presente trabajo de investigación abarca el tema de la complementación en el guion, actuación y dirección de arte para la creación del personaje de Kevin Wendell Crumb. Esto se debe a que muchas veces, no se toman en cuenta estos elementos para crear determinados personajes en las películas. / The present research work covers the subject of complementation in the script, acting and art direction for the creation of the character of Kevin Wendell Crumb. This is because many times, these elements are not taken into account to create certain characters in the films. / Trabajo de investigación

Art-directability is a crucial aspect of creating aesthetically pleasing visual effects that help tell stories. A particularly common method of art direction is the retiming of a simulation. Unfortunately, the means of retiming an existing simulation sequence which preserves the desired shapes is an ill-defined problem. Naively interpolating values between frames leads to visual artifacts such as choppy frames or jittering intensities. Due to the difficulty in formulating a proper interpolation method we elect to use a machine learning approach to approximate this function. Our model is based on the ODE-net structure and reproduces a set of desired time samples (in our case equivalent to time steps) that achieves the desired new sequence speed, based on training from frames in the original sequence. The flexibility of the updated sequences' duration provided by the time samples input makes this a visually effective and intuitively directable way to retime a simulation.

Menée en milieu minoritaire francophone, cette recherche porte sur la prise de décision complexe liée à la supervision pédagogique chez les directions d’école élémentaire de l’Ontario. Sachant que les élèves de certaines écoles francophones réussissent moins bien que ceux des écoles anglophones, l’objectif est de décrire et de comprendre comment les directions d’école prennent des décisions pédagogiques complexes. Pour y parvenir, cette recherche se fonde sur un cadre de référence hybride traitant de la prise de décision complexe et du leadership éducationnel en milieux linguistiques minoritaires. Précisons que notre recherche ne tente pas de comparer les milieux linguistiques mais bien de relever les particularités du milieu francophone minoritaire quant à la prise de décision complexe liée à la supervision pédagogique chez les directions d’école. Épousant le paradigme interprétatif, cette recherche utilise l’étude multicas pour la collecte des données réalisée à l’aide d’entrevues semi-structurées individuelles auprès d’acteurs scolaires tels que les directions d’école, les directions de l’éducation et les enseignants. Les données ont été organisées selon quatre sections : le profil des répondants du cas, la fonction de la direction d’école, le processus de la prise de décision complexe et les éléments qui l'influencent. L'analyse des données a été réalisée à l'aide du logiciel NVivo et elle nous a permis de dresser le profil des répondants de chacun des quatre cas et de faire ressortir, par une analyse comparative, les convergences et les divergences entre ceux-ci.Les résultats de l'analyse mettent en évidence le fait que les directions d'école ne suivent pas nécessairement les mêmes étapes quant à la prise de décision pédagogique complexe. Si la majorité d'entre elles prend des décisions complexes selon la méthode rationnelle, les autres évoquent le recours à un processus décisionnel cyclique et itérative. Toutefois, ells croient toutes que l'expérience de vie personnelle et professionnnelle exerce la principale influence sur leur prise de décision complexe. L'analyse comparative des données a permis de proposer un modèle de prise de décision reflétant le milieu scolaire minoritaire francophone de l'Ontario où la consultation est considérée comme une valeur ajoutée dans le processus décisionnel. Finalement, s'insérant dans les rapports à l'identité et à la gestion scolaire, cette recherche pose un jalon pour l'étude de la prise de décision pédoagogique complexe et propose des pistes de recherches futures afin de poursuivre la réflexion.