En los últimos años las motocicletas se han vuelto cada vez más comunes como medio de transporte en la población en Perú, ya sea por ser más ligera, rápida e implicar costos muchos menores que un auto. Sus usuarios aumentan constantemente y con ello también sus necesidades, y es que la moto presenta muchas ventajas, pero también requiere de algunos servicios que no son muy frecuentes de encontrar en Lima. Entre ellos se encuentra la falta de estacionamientos, y es que en el país se percibe la ausencia de lugares específicos en los que estacionar una moto. Por otro lado, a causa de la pandemia los ingresos de muchas personas se han reducido constantemente y en algunos casos están en busca de obtener una fuente de dinero adicional y una opción que contempla es alquilar un espacio de su casa. El siguiente trabajo de investigación se centrará en verificar la viabilidad de desarrollar un aplicativo que conecta y les brinde una solución a ambos segmentos, desarrollaremos experimentos que cuenten con diversos participantes entre ellos expertos para conocer la factibilidad de la idea de negocio y obtener ideas que puedan potenciarla. Además, se elaboraron distintas acciones, estrategias para generar una introducción estable de la idea y proyección tanto de ventas como financiera con la que poder identificar la rentabilidad de la propuesta. / In recent years, motorcycles have become increasingly common as a means of transportation in the population of Peru, either because they are lighter, faster and involve much lower costs than a car. Its users constantly and with it also their needs, and the motorcycle has many advantages, but it also requires some services that are not very frequent to find in Lima. Among them is the lack of parking lots, and it is that in the country the absence of specific places in which to park a motorcycle is perceived. On the other hand, a cause of the pandemic, the income of many people has been constantly reduced and in some cases they are looking for an additional source of money and an option that contemplates renting a space in their house. The following research work will focus on verifying the viability of developing an application that connects and provides a solution to both segments, we will develop experiments that have various participants, including experts to know the feasibility of the business idea and obtain ideas that can empower it. In addition, different actions were developed, strategies to generate a stable introduction of the idea and both sales and financial projection in order to identify the profitability of the proposal. / Trabajo de investigación

The main purpose of the diploma project is to redesign an object of the Brno Grand Prix areal. The design case study is a second step after an urban project analyses created in the pre - diploma project phase. The main aim of the diploma design studio is to produce a new impulse in the whole nearby area of the Brno Grand Prix by finding a new purpose for the city's iconic areal and creating a decent and representative place for exhibition of the extensive history of Czechoslovak Motor sport.

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Les lesions cerebrals per traumatismes craniencefàlics són la causa més freqüent de defunció en els accidents de trànsit en els que estan implicats vehicles de dues rodes. Malgrat la provada eficàcia de l'ús del casc per amortir les lesions en cas d'accidents, molts adolescents i joves no el fan servir o fan un ús incorrecte. El principal objectiu d'aquesta investigació és identificar les variables que millor prediuen l'ús del casc entre els adolescents. En la recerca es combinen la metodologia quantitativa i qualitativa i consta de dues fases. A la primera fase participen 876 estudiants de secundària (46,8% nois) amb edats compreses entre 14 i 18 anys. A la segona fase, s'estudien quatre casos d'adolescents que han patit un accident greu circulant amb ciclomotor i que no portaven el casc o feien un ús incorrecte. Els resultats suggereixen que l'edat i la influència social són les variables més rellevants per predir l'ús continuat del casc entre els adolescents. De l'estudi se'n deriven estratègies d'intervenció per incrementar l'ús del casc entre els dolescents. / The cerebral injuries as a result of cranio-encephalic traumatism are the most frequent cause of death in two-wheel vehicle accidents. In spite of the proven effectiveness of the use of the helmet to deaden injuries in the event of accidents, many teenagers and youngsters do not use it or use it incorrectly. The main goal of this research is to identify the variables that best predict the use of the helmet among adolescents. The research combines the use of quantitative and qualitative methodology and consists of two phases. 876 secondary students (46,8% boys) between 14 and 18 took part in the 1st phase. The 2nd phase consists in the study of 4 cases of teenagers who have suffered severe moped accidents while driving without helmet or using it incorrectly. The results suggest that the age and the social influence are the most relevant variables to predict the regular use of the helmet among the teenagers. The study results in intervention strategies to increase the use of the helmet among adolescents.

In order to meet future emission norms for small carbureted SI engines, such as those used on motorcycles in India, there is a need to study mixture preparation, specifically the two-phase flow exiting the carburetor and entering the inlet manifold. A fully functional, modular experimental rig is designed and erected for performing both qualitative and quantitative flow visualization. The vibrations of the engine are minimized to reduce their effect on the flow. A special, optically accessible tube of square cross-section is added between the carburetor and the inlet manifold, to enable the visualization of flow at the exit of the carburetor. An electronic circuit to obtain a signal for the engine crank angle and convert it to a standard TTL pulse, for use on standard imaging systems to capture cycle resolved-images is also designed. The flow in the optical section is qualitatively visualized using high and low speed cameras. The resulting images and movies show two modes of fuel transport within the inlet manifold, one of which is in the form of a dense cloud of fine fuel droplets during some part of the intake stroke. The second mode is in the form of a film at all times in the cycle, along the lower surface of the inlet manifold during idling and along vertical walls under loaded conditions. Recirculation is seen on the vertical walls of the manifold during idling and under load. Finally, the thickness of the fuel film in the optical section at the exit of the carburetor is measured, using PLIF. This part of the study also reveals that there is a film on upper surface of the optical section, at all loads and speeds. This film is lesser than the resolution of measurement for low loads, and increases to 0.5 mm in the case of highest load and speed attained at full throttle. In contrast to the loaded conditions, during idling, the film occurs on the lower surface of the manifold and its thickness is highest (1 mm.). The film is also present throughout the cycle during idling and all load-speed conditions, suggesting that the mixture that goes into the engine has a significant part of fuel in liquid form.

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Two and three-wheeled vehicles are being used in increasing numbers in many emerging countries. The dynamics of such vehicles are very different from those of cars and other means of transportation. This thesis deals with a study of the dynamics of a motorcycle and an extensively used three-wheeled vehicle, called an “auto-rickshaw” in India. The commercially available multi-body dynamics (MBD) software, ADAMS, is used to model both the vehicles and simulations are performed to obtain insight into their dynamics. In the first part of the thesis, a study of the two wheeler dynamics is presented. A fairly detailed model of a light motorcycle with all the main sub-systems, such as the frame, front fork, shock absorbers , power train, brakes, front and rear wheel including tire slips and the rider is created in ADAMS-Motorcycle. The simulation results dealing with steering torques and angles for steady turns on a circular path are presented. From the simulation results and analytical models, it is shown that for path radius much greater than motorcycle wheel base, the steering torque and angle can be described by only two functions for each of the two variables. The first function is related to the lateral acceleration and can be determined numerically and the second function, in terms of the inverse of the path radius, is derived as an analytical approximation. Various tire and geometric parameters are varied in the ADAMS simulations and it is clearly shown that steady circular motion of a motorcycle can be reasonably approximated by only two curves–one for steering torque and one for steering angle. In the second part of the thesis, a stability analysis of the three-wheeled “autorickshaw” is presented. The steering instability is one of the major problems of the “auto-rickshaw” and this is studied using a MBD model created in ADAMS-CAR .In an Initial model the frame ,steering column and rear-forks (trailing arms) are assumed to be rigid. A linear eigenvalue analysis, at different speeds, reveals a predominantly steering oscillation, called a “wobble” mode, with a frequency in the range of 5 to 6Hz. The analysis results show that the damping of this mode is small but positive up to the maximum speed(14m/s) of the three-wheeled vehicle. Experiments performed on the three-wheeled vehicle show that the mode is unstable at speeds below 8.33m/s and thus the experimental results do not agree with the model. Next, this wobble instability is studied with an analytical model, similar to the model proposed for wheel shimmy problem in aircrafts. The results of this model show that the wobble is stable at low speeds regardless of the magnitude of torsional stiffness of steering column. This is also not matching with the experimental result. A more refined MBD model with flexibility incorporated in the frame, steering column and the trailing arm is constructed. Simulation results with the refined model show three modes of steering oscillations. Two of these are found to be well damped and the third is found to be lightly damped with negative damping at low speeds, and the results of the model with the flexibility is shown to be matching reasonably well with the experimental results. Detailed simulations with flexibility of each body incorporated, one at a time, show that the flexibility in the steering column is the main contributor of the steering instability and the instability is similar to the wheel shimmy problem in aircrafts. Finally, studies of modal interaction on steering instabilities and parametric studies with payload and trail are presented.

No description available.

Indiana University-Purdue University Indianapolis (IUPUI) / Grounded theory analysis, informed by a socio-cultural lens, was applied to the narratives of eighteen motorcycle riders in order to understand, from the rider’s perspective, receptivity to warning messages regarding motorcycle helmet use. This study relied upon narrative analysis to identify patterns in communication that surround motorcycle riders’ experiences. Socio-cultural cues identified importance in the process of interest development in motorcycle riding, search for information regarding motorcycle riding, response to danger within the motorcycle riding experience, and attitude toward protection messages. Narratives specific to danger, or experiences of motorcycle accidents were analyzed for comparison with fear appeal theory. Special focus was applied to Terror Management Theory (TMT) and applied to the communication surrounding the real experiences of motorcycle accident and the perceived threat of danger while motorcycle riding. Communication evidencing relational influence was examined for examples of socially constructed interpretation of social identity and an individual rider's perspective of their lifeworld. The analysis revealed evidence of the TMT concept of burying or denying thoughts of danger. The TMT concept of lifeworld influence on behavior was evidenced in riders who did not accept warning messages involving helmet use. Examples of attitude and behavior change where present in two study participants’ narratives that described experience of severe injury and also the death of a friend. The riders cited these occurrences as experiences that inhibited their previous behavior of placing thoughts of motorcycle injury and death in the back of mind. Although small in number, this participant group offered multiple categorizations of rider descriptions. The narratives offered distinction in time of life when riding interest developed. As well, motorcycle training facilities were often noted as a source of communication from which riders obtained influence on their future behaviors. From this information insight was gained to offer suggestions for future research on time of message delivery. Riders who develop interest in riding as adults represent a category on which to focus preliminary educational messages. Individuals who have not yet developed an interest in motorcycle riding may benefit from societal cues that demonstrate safe riding behavior. Future research in mass media appeals focused on motorcycle riders are suggested, as is development of educational programs for delivery to high school audiences.