Tesis para optar al grado de Magíster en Gestión para la Globalización / La presente tesis corresponde al resultado de un proyecto efectuado en la empresa LATAM Airlines Group, en el área de mejores prácticas de revenue management. El proyecto consistió en la revisión del modelo de negocios denominado LASER (Línea Aérea Segura Económica Regional) que se implementó el año 2007 y en la elaboración de un plan para proponer un modelo LASER 2.0 para el mercado doméstico de Colombia, buscando alternativas para mejorar los resultados de este mercado. La metodología empleada combinó recolección de información bibliográfica, entrevistas con ejecutivos de la empresa y utilización de diferentes herramientas de análisis estratégico y análisis costo/beneficio. Se escogió Colombia como mercado de estudio por presentar mayor oportunidades de crecimiento que los otros países donde LAN está presente con vuelos nacionales. Al realizar un estudio estratégico de la industria aérea colombiana, se encuentra que es una industria con alta rivalidad, con una poderosa línea aérea local y un competidor debajo costo. La existencia de un claro líder de mercado, Avianca, otorga condiciones muy distintas a las que ha enfrentado LAN en sus otros mercados domésticos. Como herramienta para mejorar el resultado del negocio nacional de Colombia se recomienda la implementación de ancillary revenue. En particular, se detallan nueve medidas de las cuales se espera generar 11 millones de dólares al año. Al proyectar el flujo a 10 años se obtiene un VAN de 60 millones de dólares y una TIR del 21 %, para el mercado doméstico de Colombia. Para captar los resultados del proyecto se recomienda implementarlo de manera inorgánica. Esto permitirá facilitar la negociación interna, lograr la alineación a nivel de la compañía y retrasar la imitación por parte de los competidores. Como principal riesgo se distingue la reacción que puedan tener de los pasajeros tras la implementación, dado que el VAN es extremadamente sensible a la cantidad de pasajeros transportados. El punto de break-even para implementar el proyecto corresponde a una caída del 4 % de los pasajeros. Dado lo anterior se recomienda la realización de pilotos y encuestas de percepción previo a la implementación, a fin de minimizar el riesgo. Finalmente, se recomienda considerar ancillary revenue como parte de un proyecto LASER 2.0 para los mercados domésticos de LATAM Airlines. Se recomienda comenzar con la implementación en el mercado de Colombia para luego evaluar la expansión a otros países. Por último, se recomienda evaluar la posibilidad de tener una estrategia diferenciada en los diferentes mercados domésticos de la compañía, según país. El crecimiento hacia nuevos países donde la realidad es distinta y LAN es la aerolínea retadora y no líder hace necesario cuestionar la mantención de una estrategia única en todos los mercados domésticos donde LAN opera.

This diploma thesis first handles the general issues concerning free space optics in the~atmosphere. The aim is to design and implementation of optical wireless equipment, which would serve in the laboratories of optical networks. Ronja was used as the basis for a~wireless link, which is already widespread in the world. Students will work with the device, which they may come into contact in the future. It consists several separate modules: transmitter, receiver and inteface. Each module have a separate chapter describing the~functional blocks and circuit realization. Ronja was adjusted for the needs of~laboratory tasks, where additional voltmeters measures received signal strength (RSSI) at~both ends of the link. Measuring device provides adjustment of power the transmitting LED via~computer, measures and sends RSSI values to a PC via~USB or RS232, turn off Ronja with computer. For targeting the pipes of Ronja was developed the mechanical design. In the last part of thesis the device was undergone a series of tests.

The aim of this thesis is to create a proposal for the modernization of secondary school computer network and its security to function as stable as possible and reliable, but not to restrict its users more than necessary. Part of the work focused on upgrading existing network will be based on the applicable standards of cabling systems, security design itself will be solved by the project from the perspective of project management, including assessing the risk of liability and the draft guidelines.

Although networked-based computational environments such as Linda-LAN provide parallel processing capability, performance is still a major concern. One critical factor that can hinder the performance of any parallel processing environment is the high cost of interprocess communication. The goal of this project is to increase the performance of C-Linda programs executed in the Linda-LAN environment. With the current two packet message passing scheme, a receiving process listens for a header packet to arrive on a socket connection. Once the header packet has been received, the process then reads the data packet that follows. Reading the data packet may cause the process to block since the data may not have arrived. By modifying the two packet scheme to use only a single packet, the potential for blocking is removed since the header and data packets are guaranteed to arrive at the same time. Hence, the time spent waiting for the data is nullified, thus producing an increase in performance. / Master of Science

Es soll untersucht werden, inwieweit sich das auf dem Gebiet der weitverkehrsnetzeetablierte ATM für den Einsatz im LAN eignet.

An important component of the revival of the works by lan Levoslav Bella (1843-1936) in regard to musicology, interpretation and reception is the collected source-critical edition of the composer's output.

No / A novel conical beam patch antenna design, suitable for local area network applications, uses a central cylindrical connection from the disc to ground to achieve a large reduction in resonant size. Results on efficiency, bandwidth, and pattern are reported for several prototypes.

京都大学 / 新制・課程博士 / 博士(情報学) / 甲第24267号 / 情博第811号 / 新制||情||136(附属図書館) / 京都大学大学院情報学研究科通信情報システム専攻 / (主査)教授 原田 博司, 教授 梅野 健, 准教授 山本 高至 / 学位規則第4条第1項該当 / Doctor of Informatics / Kyoto University / DGAM

Wireless Local Area Networks (WLAN) have proliferated in the last 5 years. The IEEE 802.11b products have become commonplace both in the residential and business places for untethered Internet access. However the end user experience has often been less satisfactory than what the technology can offer. The degradation in the performance of the system is mainly attributed to the poor network design. The current network design is primarily RF centric. There are two factors that need to be in the incorporated in the design. Firstly a clear understanding of the traffic sources in the network such as the peak load of the system is necessary. Secondly the design should account for the limitations of the indoor propagation such as interference and multipath. The goal of this thesis is to develop a simulator which will predict the performance (throughput) of an end user. The throughput is predicted for a given topology and traffic source. The simulator is built on object oriented design. To validate the simulator a measurement campaign was conducted. The campaign was conducted in two different channel conditions, office space and open hall. The channel measurements were also performed at these locations to understand the multipath. Comparative studies indicate that the choice of the rate adaptation algorithm hugely influences the predicted throughput. The simulator results match very well with the measurement results for the open space scenario. For the office space scenario the simulator varied by roughly 20% from the measurement results. This was due to existence of multipath leading to Inter Symbol Interference. / Master of Science

Indoor wireless communication systems are becoming increasingly prevalent in work environments. The need to quickly and efficiently provide in-building and microcellular coverage without sacrificing quality is critical to cellular and emerging personal communication system (PCS) operators. Traditionally, indoor wireless communication system design has been carried out by human experts relying on experience to determine a satisfactory system configuration. This thesis describes the algorithms and technical considerations implemented in a comprehensive propagation planning tool, SMT Plus, which has been designed to predict the coverage regions of both in-building and microcellular wireless communication systems. The goal of SMT Plus is to provide both wireless service providers and equipment manufacturers with an efficient, easy-to-use coverage prediction tool for use in the design of any indoor or campus-wide wireless system. Using site-specific building information combined with on-site signal strength measurements, the tool provides system planners with a highly accurate model of the propagation environment among a group of buildings. SMT Plus provides a comprehensive solution to the planning and installation of wireless communication systems in and around buildings. / Master of Science