O problema de escalonamento de veículos com múltiplas garagens (MDVSP, do inglês Multi-Depot Vehicle Scheduling Problem) é um problema clássico de logística e transportes. O MDVSP também é a base para a solução de vários problemas correlatos, tais como o problema de escalonamento de veículos em tempo-real e soluções integradas com o escalonamento de veículos, tais como o escalonamento da tripulação e otimização da tabela de horários. Desta forma, aprimorar a solução deste problema pode ser considerado de grande relevância, a qual permitirá resolver grandes instâncias reais de forma eficiente, bem como permitir a solução de problemas correlatos. O objetivo desta dissertação é verificar a aplicabilidade da utilização da rede tempo-espaço e do método de geração de colunas modificado proposto, para a solução deste problema, e de sua variante com frota heterogênea, considerando grandes instâncias. Diversos testes foram realizados utilizando o gerador de instâncias aleatórias com base na distribuição de demandas proposto. Grandes instâncias, envolvendo milhares de viagens (entre 500-10.000) e dezenas de garagens (4-128) são resolvidas em tempos razoáveis. / The multiple-depot vehicle-scheduling problem (MDVSP) is a classic logistic and transportation problem. The MDVSP is also a subproblem for solving various related problems, such as the real time vehicle scheduling problem, disruption management; and integrated problems such as the vehicle and crew scheduling problems. Although several mathematical and solution method have been developed in the literature, large instances (involving thousands of trips and several depots) are still difficult to solve in a reasonable time. The objective of this research work is to verify the applicability of the use of the space-time network towards obtaining good solutions for large instances in short time. Time-space network was suggested by Kliewer et al (2006), and it is positioned with respect to two-dimensional axes, one representing time and the other one space or stations. The arcs represent deadheading movements; and waiting periods in the same station. Solution methods for the MDVS combining time space with integer linear programming solvers and column generation were developed. Extensive testing was carried out using random generated instances, based on demands distribution. Large instances, involving thousands of trips (between 1,000-10,000) and dozen (4-64) depots, are solved in reasonable times.

Este trabalho é uma reflexão sobre as relações espaço-temporais que emergem das obras de artemídia, notadamente as que operam na fronteira entre real e virtual. A pesquisa estrutura-se em torno da conceituação de um arranjo espaço-temporal, que definimos como timescape, percebido em distintos graus de intensidade. Para tanto desenvolvemos uma cartografia que associa o desenvolvimento tecnológico, suas imbricações e ligações com a contemporaneidade e as manifestações artísticas, observando como essas situações se alteram em relação ao tempo. A pesquisa também contempla um conjunto de análises de obras de artemídia de artistas como o grupo Blast Theory, Rafael Lozano-Hemmer, Jeffrey Shaw e Giselle Beiguelman, entre vários outros. / This research is a reflection on spatial-temporal relationships that emerge from media art works, mainly on the border between real and virtual reality. The investigation is based on the concept of a space-time arrangement, which we define as timescapes. Therefore we developed a cartography that combines technology development, its imbrications and relations with contemporaneity and artistic events, observing how the relationships have changed In relation to the time. The research also includes a set of analyses of media artworks like Blast Theory, Rafael Lozano-Hemmer, Jeffrey Shaw, Giselle Beiguelman and from numerous others.

<p>ABSTRACT</p><p>Title: Loyalty Club. An Online Brand Relations Management Project</p><p>Amount of pages: 46 (61 including abstract, references and annexes)</p><p>Author: Michaela Ristiniemi</p><p>Tutor: Peder Hård af Segerstad</p><p>Course: Media- and communication D</p><p>Period: Spring 2007</p><p>University: Division of Media and Communication, Department of Information Science, Uppsala University</p><p>Object: To research how an interactive relation online could be created between a brand such as Matrix and their customers, on the Swedish market.</p><p>Method: Qualitative interview</p><p>Material: Interviews with Matrix product manager and hairdressers</p><p>Main results: A relation online works the same way that a relation does offline; that even if the Internet as medium works fast and effectively, the relation is built over time. It is a communication process which requires much attention, where it is the consumer that to a large extent runs the relations company. This sort of relation can be very valuable for the hairdressers since it can save time and trouble where it is needed and develop them as professionals, and for the brand it can give loyal customers when they themselves become loyal to the customer. The online space, or “loyalty club”, should be simple and contain only information that the hairdressers are interested in, and what that is, is found through the dialogue with them. This is a new development and it meets skepticism as does most of the new occurrences, but much points to that it is the future of communication and more so for the generation that was brought up with the Internet and thus interacts with it naturally. The core question of In ernet is that it is used to organize timespace, with the freedom to act independently.</p><p>Key notions: Communication, time-space, interactivity, dialogue, relationships and loyalty.</p>

ABSTRACT Title: Loyalty Club. An Online Brand Relations Management Project Amount of pages: 46 (61 including abstract, references and annexes) Author: Michaela Ristiniemi Tutor: Peder Hård af Segerstad Course: Media- and communication D Period: Spring 2007 University: Division of Media and Communication, Department of Information Science, Uppsala University Object: To research how an interactive relation online could be created between a brand such as Matrix and their customers, on the Swedish market. Method: Qualitative interview Material: Interviews with Matrix product manager and hairdressers Main results: A relation online works the same way that a relation does offline; that even if the Internet as medium works fast and effectively, the relation is built over time. It is a communication process which requires much attention, where it is the consumer that to a large extent runs the relations company. This sort of relation can be very valuable for the hairdressers since it can save time and trouble where it is needed and develop them as professionals, and for the brand it can give loyal customers when they themselves become loyal to the customer. The online space, or “loyalty club”, should be simple and contain only information that the hairdressers are interested in, and what that is, is found through the dialogue with them. This is a new development and it meets skepticism as does most of the new occurrences, but much points to that it is the future of communication and more so for the generation that was brought up with the Internet and thus interacts with it naturally. The core question of In ernet is that it is used to organize timespace, with the freedom to act independently. Key notions: Communication, time-space, interactivity, dialogue, relationships and loyalty.

The main focus of this thesis is on fast numerical methods, where adaptivity is an important mechanism to lowering the methods' complexity. The application of the methods are in the areas of wireless communication, antenna design, radar signature computation, noise prediction, medical ultrasonography, crystal growth, flame propagation, wave propagation, seismology, geometrical optics and image processing.   We first consider high frequency wave propagation problems with a variable speed function in one dimension, modeled by the Helmholtz equation. One significant difficulty of standard numerical methods for such problems is that the wave length is very short compared to the computational domain and many discretization points are needed to resolve the solution. The computational cost, thus grows algebraically with the frequency w. For scattering problems with impenetrable scatterer in homogeneous media, new methods have recently been derived with a provably lower cost in terms of w. In this thesis, we suggest and analyze a fast numerical method for the one dimensional Helmholtz equation with variable speed function (variable media) that is based on wave-splitting. The Helmholtz equation is split into two one-way wave equations which are then solved iteratively for a given tolerance. We show rigorously that the algorithm is convergent, and that the computational cost depends only weakly on the frequency for fixed accuracy.  We next consider interface tracking problems where the interface moves by a velocity field that does not depend on the interface itself. We derive fast adaptive  numerical methods for such problems. Adaptivity makes methods robust in the sense that they can handle a large class of problems, including problems with expanding interface and problems where the interface has corners. They are based on a multiresolution representation of the interface, i.e. the interface is represented hierarchically by wavelet vectors corresponding to increasingly detailed meshes. The complexity of standard numerical methods for interface tracking, where the interface is described by marker points, is O(N/dt), where N is the number of marker points on the interface and dt is the time step. The methods that we develop in this thesis have O(dt^(-1)log N) computational cost for the same order of accuracy in dt. In the adaptive version, the cost is O(tol^(-1/p)log N), where tol is some given tolerance and p is the order of the numerical method for ordinary differential equations that is used for time advection of the interface.   Finally, we consider time-dependent Hamilton-Jacobi equations with convex Hamiltonians. We suggest a numerical method that is computationally efficient and accurate. It is based on a reformulation of the equation as a front tracking problem, which is solved with the fast interface tracking methods together with a post-processing step.  The complexity of standard numerical methods for such problems is O(dt^(-(d+1))) in d dimensions, where dt is the time step. The complexity of our method is reduced to O(dt^(-d)|log dt|) or even to O(dt^(-d)). / <p>QC 20121116</p>

ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NV / A field programmable gate array (FPGA) is used to decode Inter-Range Instrumentation Group (IRIG) time code for a PC-based Time-Space-Position Information (TSPI) acquisition. The FPGA architecture can latch time via an external event trigger or a programmable periodic internal event. By syncing time with an external IRIG Group Type B (IRIG-B) signal and using an 8 megahertz (MHz) internal clock, captured time has 125 nanosecond (ns) precision. A Range Instrumentation Control System (RICS) application utilizing the FPGA design to capture IRIG time is presented and test results show matching time accuracy when compared to commercial IRIG time capture hardware components.

This study was conceptualized from my own experience working on board cruise ships and from the lack of studies of relationships on board cruise ships. This thesis examines the question: how does globalization in the form of accelerated capitalism and inter- connectedness through the sharing of food and drink across national identities that takes place in the space of cruise ships affect intimate relationships of cruise employees? Through the examinations of narratives of nine ex-crewmembers, developed through qualitative interviews, by using both the phenomenological and narrative methodology a couple of prominent themes appeared. The interviewees described working on a cruise ship as “intense” and the passage of time appears faster on board ship. It appears throughout the narratives, the nature of accelerated capitalism in the cruise ship industry affects the way the majority conduct their relationships.

This study was conceptualized from my own experience working on board cruise ships and from the lack of studies of relationships on board cruise ships. This thesis examines the question: how does globalization in the form of accelerated capitalism and inter- connectedness through the sharing of food and drink across national identities that takes place in the space of cruise ships affect intimate relationships of cruise employees? Through the examinations of narratives of nine ex-crewmembers, developed through qualitative interviews, by using both the phenomenological and narrative methodology a couple of prominent themes appeared. The interviewees described working on a cruise ship as “intense” and the passage of time appears faster on board ship. It appears throughout the narratives, the nature of accelerated capitalism in the cruise ship industry affects the way the majority conduct their relationships.

Mobility is a term used to describe people's movement in space. The individual's choice of transportation mode has always varied depending on factors such as availability and economy, but also on gender. Studies show that in most cases, the woman in a family travels collectively to work while the man uses the car. Women furthermore tend to seek work closer to home because of the continued perception of themselves as the main accountable for nursing children. Collective modes of transport possess a variety of factors which affects the user's design of everyday life. Timetables, fixed stops and delays are some examples of obstacles that a collective traveler needs to take into account when planning the travel. Furthermore higher stress levels and limited leisure time are examples of consequences that can affect public transport users. The purpose of this qualitative study is to investigate women's experience of work trips and how they deal with possible disturbances in the work travel. The goal is to gain a deeper insight into work trips as part of an individual's daily life. In this case women living in a society located ca 30 km from their workplace in northern Sweden. For this reason, it was considered valuable for the study to conduct in depth interviews. The analysis method underlying this study is a thematic analysis. The analytic coding led to the finding of 3 themes regarding women´s perception about work travel. The themes were; reliability in the transport system, individual flexibility and personal priorities.

Fundamentada na afirmativa de Mássimo Montanari, de comida como cultura, esta dissertação pretende acompanhar através de uma cartografia rural, as transformações das paisagens culturais alimentares na cidade de Tio Hugo/RS e seu entorno. O trabalho é apresentado em dois tempos, o primeiro deles sob a metáfora de um mise-en-place, onde são pré-preparados os conceitos fundantes da pesquisa, bem como as estratégias utilizadas em seu modo de preparo. O segundo tempo é composto pela incursão no território pesquisado, pelas narrativas de mulheres colonas e suas famílias e, também, pela apresentação das análises empreendidas pelo cartógrafo, dentro do que se circunscreve como campo dos Estudos Culturais em Educação. A ênfase desse estudo está direcionada para algumas transformações culturais das técnicas utilizadas nas preparações de alimentos, em seus modos de preparo, nas escolhas dos ingredientes, do tempo destinado ao fazer culinário, dos saberes transmitidos, dos processos de urbanização e industrialização do meio rural. O eixo do trabalho são os deslocamentos espaço-temporais e as vicissitudes da cultura. O desfecho da pesquisa busca problematizar, a partir desses eixos, como vem se produzindo uma percepção acelerada do tempo, correlacionada a alguns aspectos como o uso de tecnologias, ao fenômeno da globalização, das relações entre produção-consumo, do terreno que emerge como gastronomia, da memória e da invenção das tradições. / Based on Massimo Montanari's view of food as culture this thesis aims to follow through a rural cartography the changes of food culturallandscapes in the city of Tio Hugo/RS and its surroundings. This dissertation is presented in two stages, the first of them shows it through a mise-en-place metaphor in which the basic concepts for this research are pre-prepared in addition to the strategies used for such process. The second moment is comprised by the incursion in the studied territory through the narrative of women settlers and their families as well as composed by showing the analysis made by the cartographer in what is circumscribed in the field of Cultural Studies in Education. The focus of this paper is directed to some cultural transformations in the techniques used in the food preparation, in the selection of ingredients, in the time spent in the act of cooking, in knowledges passed on, in the urbanisation and industrialisation process in the rural area. This essay core is the space-time journeys and the cultural vicissitudes. The gol of this work is to problematize through these grounds how a fast-forward perception of time has been created, correlated to some aspects of use of technologies, to the globalisation phenomena, to te relations between production and consumption, to the territory that emerges as gastronomy, to the memory and the creation of traditions.