Los alumnos universitarios buscan métodos alternativos para prepararse para sus exámenes, la primera opción que presentan es, la mayoría de las veces, consultar a un amigo. Asimismo, hay una oferta limitada, pero creciente, de personas que quieren ser tutores de alumnos para generar ingresos ofreciendo sus conocimientos. Nuestra plataforma llamada “uGet” logra juntar a estos dos grupos de personas y generar valor para ambos. Usamos herramientas digitales gratuitas y conocidas en el mundo educativo como todas las aplicaciones de Google Suite y Skype logrando minimizar costos y facilitando la navegación de los usuarios al brindar el servicio. Los alumnos pueden comprar nuestros (1) materiales de estudio, (2) videoclases, y (3) reservar clases con los tutores. Para ello deben comprar COINS mediante transferencias de dinero a nuestros canales de pago. Dichas monedas son asignadas, acumuladas y descargadas dependiendo de las compras. La escalabilidad de este modelo de negocio se sostiene en el supuesto de que los alumnos de las principales universidades del Perú están familiarizados con las herramientas que utilizamos, la metodología de evaluación es por exámenes o pruebas que se dan varias veces durante el año y que nuestro potencial de abarcar este mercado está limitado en la automatización de procesos. Finalmente, se obtienen resultados positivos en el tercer año de operación proyectado. / University students look for alternative methods to prepare for their exams, the first option they present is, most of the time, to consult a friend. Also, there is a limited, but growing, number of people who want to be tutors of students to generate income by offering their knowledge. Our platform called "uGet" manages to bring together these two groups of people and generate value for both. We use free and well-known digital tools in the educational world like all Google Suite and Skype apps, managing to minimize costs and facilitating user navigation when providing the service. Students can buy our (1) study materials, (2) video classes, and (3) book classes with tutors. To do this they must buy COINS through money transfers to our payment channels. These coins are assigned, accumulated and discharged depending on the purchases. The scalability of this business model assumes that the students of the main universities of Peru are familiar with the tools we use; the evaluation methodology is by exams or tests that are given several times during the year and that our potential to encompass this market is limited in process automation. Finally, positive results are obtained in the third year of projected operation. / Trabajo de investigación

Hoy en día, diversas empresas de turismo buscan la forma de diferenciarse entre ellas, desarrollan todo tipo de estrategias que les permitan atraer a más clientes y fidelizarlos. En el mercado, ya son varias empresas que optaron por ser digitales debido a su público objetivo y la época en la que vivimos, pero son pocas las que brindan además de un servicio digital, un servicio que se adapte las necesidades o deseos del cliente. Por dicha razón, en el presente trabajo se eligió desarrollar una plataforma digital que brinde a los turistas un servicio 100% personalizado. Dado el boom del turismo en el Perú y la pasión de cada uno de nosotros por viajar se eligió crear Friends & Travel, una empresa que busca conectar a viajeros de todo el mundo con personas que los ayuden o asesoren con la planificación de su viaje para conocer mejor su destino y vivir una experiencia única y diferente. Los resultados de este trabajo demuestran como el turismo es una importante fuente de desarrollo en nuestro país por lo que crear nuevos modelos de negocio en el sector debe ser exitoso. Las tradicionales agencias de turismo o plataformas digitales internacionales como Booking o Trip Advisor no deben ser las únicas empresas que brindan la información necesaria a cada turista, deben exitir otros medios con un trato personalizado que los ayude a programar sus aventuras y viajes. / Today, various tourism companies seek to differentiate between them, develop all kinds of strategies that allow them to attract more customers and build loyalty. In this market, there are already several companies that chose to be digital due to their target audience and the time in which we live, but few provide a digital service, a service that suits the needs or wishes of the client. For this reason, in this work we chose to develop a digital platform that provides tourists with a 100% personalized service. Given the tourism boom in Peru and the passion of each one of us to travel, we chose to create Friends & Travel, a company that wants to connect travelers from all over the world with people who can help or advise them with the planning of their trip to Know their destination better and live a unique and different experience. The results of this work demonstrate how tourism is an important source of development in our country, so creating new business models in the sector must be successful. Traditional tourism agencies or international digital platform such as Booking or TripAdvisor should not be the only companies that provide the necessary information to each tourist, there must be other means with a personalized service that helps them to program their adventures and trips. / Trabajo de investigación

The static stability of a Tension Leg Platform (TLP) with an intact tendon system is principally provided by its tendons and hence quite different from those of a conventional ship or even a floating structure positioned by its mooring system. Because small deformations in tendons are capable of providing sufficient righting moment to a TLP, the contribution from the inclination of its hull is relatively insignificant, especially when its tendon system is intact. When the tendon system of a TLP is completely damaged, the static stability of a TLP behaves and is calculated in a similar manner as those of a conventional ship. In the case of a TLP with a partially damaged tendon system, the stability of a TLP may be provided by the deformation of its tendons and to a certain extent the inclination of its hull. Several hurricanes in recent years have raised concerns about the feasibility and the robustness of the TLP concept in the deep water Gulf of Mexico. To the best of our knowledge, existing publications on the research of static stability of TLPs are limited. This study investigates the static stability of different types of TLPs representing those deployed in the Gulf of Mexico, under three different scenarios. That is, a TLP with 1) an intact tendon system, 2) a partially damaged tendon system, and 3) a completely damaged tendon system. The four different types of TLP chosen for this study are 1) a conventional four-leg TLP, 2) three-leg mini TLP, 3) extended four-leg TLP and 4) mini four-leg TLP. To avoid buckling and yielding occurring in a tendon, we define that the maximum righting moment provided by an intact or partially damaged tendon system is reached when the tension in one or more tendons on the down tension leg becomes zero or when the tension in one or more tendons on the up tension leg starts to yield. This definition leads us to identify the most dangerous (or vulnerable) directions of met-ocean conditions to a TLP with an intact or partially damaged tendon system. Hence, our finding may also be used in the study on the pitch/roll dynamic stability of a TLP. The righting moments of each TLP in the three different scenarios are respectively computed and compared with related wind-induce static upsetting moment at certain velocities. By comparing their ratios, the static stability of a TLP and the redundancy of its tendon system may be revealed, which has important implication to the design of a TLP.

Radio frequency identi cation (RFID) is a rapidly emerging technology that enables au- tomatic remote identi cation of objects. Passive and semi-passive RFID systems can be distinguished from other forms of wireless systems, because the RFID tags (transponders) communicate by way of backscatter. In addition, passive tags derive their energy from the RF energy emitted by the reader. RFID technology can provide a fully automated data capture and analysis system. Compared to a passive RFID system, an open platform semi-passive UHF RFID tag can provide identi cation, security, low-power (compared to a wireless sensor net- work(WSN)), medium range and medium processing speed. However, the eld of semi- passive RFID is still under development, and has yet there are no open development platforms available. This thesis develops a prototype of a semi-passive UHF RFID tag that is compatible with the leading UHF RFID standard EPCglobal Gen 2 Class 1. I alsot has the exible I2C and analog digital converter(ADC) interface, which allows the additional of external analog and digital sensors. The sensor data can be read by microcontroller and stored at memory. Standard reader can get sensor data by sending QUERY and READ command to tag. Test results of our open platform semi-passive UHF RFID tag demonstrated that it can achieve a read rate above 50% when an open platform semi-passive UHF RFID tag is placed four meters from the reader antenna and the reader output power is set to 21 dBm. In addition, the proposed semi-passive open platform RFID tag consumes very little power (4.9 mA in 2V with system frequency set to 8MHz).

With the rapid development of terminal hardware, mobile users and network environments, the scale of the mobile Internet appears to be catching up with the desktop Internet. Positioning System, phone sensors and applications which are able to be used anywhere have caused the arrival and increase in usage of the smart phone, and the world has become mobile-first. Within medical fields, the smart phone is also regarded as an acceptableassistant for nurses and patients as based on the advantages of mobile Internet. It is possible for healthcare personnel to assign tasks for the patients from a different place if there is a computer connected to the Internet. In addition,the smart phones is able to act as a nurse and remind the patients to complete their tasks. Accordingly, it has become a necessity to achieve this electronic healthcare system for hospitals. The objective of this research project is to summarize the procedures of this development, and release the relevant software based on an Android platform. Additionally, a corresponding website is to be designed so that healthcare personnel are able to sign in in order to deal with the tasks. The entire system has been tested in real scenarios, at this point only by the authorbut has still not been used by other organizations. The final part of the report involves the conclusions drawn and provides suggestions for further work about the whole project.

Radio frequency identi cation (RFID) is a rapidly emerging technology that enables au- tomatic remote identi cation of objects. Passive and semi-passive RFID systems can be distinguished from other forms of wireless systems, because the RFID tags (transponders) communicate by way of backscatter. In addition, passive tags derive their energy from the RF energy emitted by the reader. RFID technology can provide a fully automated data capture and analysis system. Compared to a passive RFID system, an open platform semi-passive UHF RFID tag can provide identi cation, security, low-power (compared to a wireless sensor net- work(WSN)), medium range and medium processing speed. However, the eld of semi- passive RFID is still under development, and has yet there are no open development platforms available. This thesis develops a prototype of a semi-passive UHF RFID tag that is compatible with the leading UHF RFID standard EPCglobal Gen 2 Class 1. I alsot has the exible I2C and analog digital converter(ADC) interface, which allows the additional of external analog and digital sensors. The sensor data can be read by microcontroller and stored at memory. Standard reader can get sensor data by sending QUERY and READ command to tag. Test results of our open platform semi-passive UHF RFID tag demonstrated that it can achieve a read rate above 50% when an open platform semi-passive UHF RFID tag is placed four meters from the reader antenna and the reader output power is set to 21 dBm. In addition, the proposed semi-passive open platform RFID tag consumes very little power (4.9 mA in 2V with system frequency set to 8MHz).

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The static stability of a Tension Leg Platform (TLP) with an intact tendon system is principally provided by its tendons and hence quite different from those of a conventional ship or even a floating structure positioned by its mooring system. Because small deformations in tendons are capable of providing sufficient righting moment to a TLP, the contribution from the inclination of its hull is relatively insignificant, especially when its tendon system is intact. When the tendon system of a TLP is completely damaged, the static stability of a TLP behaves and is calculated in a similar manner as those of a conventional ship. In the case of a TLP with a partially damaged tendon system, the stability of a TLP may be provided by the deformation of its tendons and to a certain extent the inclination of its hull. Several hurricanes in recent years have raised concerns about the feasibility and the robustness of the TLP concept in the deep water Gulf of Mexico. To the best of our knowledge, existing publications on the research of static stability of TLPs are limited. This study investigates the static stability of different types of TLPs representing those deployed in the Gulf of Mexico, under three different scenarios. That is, a TLP with 1) an intact tendon system, 2) a partially damaged tendon system, and 3) a completely damaged tendon system. The four different types of TLP chosen for this study are 1) a conventional four-leg TLP, 2) three-leg mini TLP, 3) extended four-leg TLP and 4) mini four-leg TLP. To avoid buckling and yielding occurring in a tendon, we define that the maximum righting moment provided by an intact or partially damaged tendon system is reached when the tension in one or more tendons on the down tension leg becomes zero or when the tension in one or more tendons on the up tension leg starts to yield. This definition leads us to identify the most dangerous (or vulnerable) directions of met-ocean conditions to a TLP with an intact or partially damaged tendon system. Hence, our finding may also be used in the study on the pitch/roll dynamic stability of a TLP. The righting moments of each TLP in the three different scenarios are respectively computed and compared with related wind-induce static upsetting moment at certain velocities. By comparing their ratios, the static stability of a TLP and the redundancy of its tendon system may be revealed, which has important implication to the design of a TLP.

No description available.

Fuel cell power generation systems provide a clean alternative to the conventional fossil fuel based systems. Fuel cell systems have a high efficiency and use easily available hydrocarbons like methane. Moreover, since the by-product is water, they have a very low environmental impact. The fuel cell system consists of several subsystems requiring a lot of effort from engineers in diverse areas. Fuel cell simulators can provide a convenient and economic alternative for testing the electrical subsystems such as converters and inverters. This thesis proposes a low-cost and an easy-to-use fuel cell simulator using a programmable DC supply along with a control module written in LabVIEW. This simulator reproduces the electrical characteristics of a 5kW solid oxide fuel cell (SOFC) stack under various operating conditions. The experimental results indicate that the proposed simulator closely matches the voltage-current characteristic of the SOFC system under varying load conditions. Effects of non-electrical parameters like hydrogen flow rate are also modeled and these parameters are taken as dynamic inputs from the user. The simulator is customizable through a graphical user interface and allows the user to model other types of fuel cells with the respective voltage-current data. The simulator provides an inexpensive and accurate representation of a solid oxide fuel cell under steady state and transient conditions and can replace an actual fuel cell during testing of power conditioning equipment.