Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 864 for “"opportunistic"”.
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Opportunistic Investment: Setting Argentina
Esta tesis solo está en formato papel por lo que se debe consultar en la propia Biblioteca Di Tella. La consulta se hace solo bajo reserva escribiendo a serviciosbiblio@utdt.edu.
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Tuberculosis: The Opportunistic Disease
Tuberculosis is an ancient disease caused by one of the most virulent and fatal biological agents; Mycobacterium tuberculosis (M. tuberculosis). Active pulmonary tuberculosis (TB) infection, which was nearly eradicated a generation ago, started to reemerge in a concerning manner in the late 1980's …
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Opportunistic Sampling by Level-Crossing
This dissertation addresses an alternative sampling method called level-crossing (LC). In recent years LC has emerged as an alternative to the traditional Nyquist-Shannon based sampling. While the conventional approach is an ideal enabler of reliable and perfect signal reconstruction, it is not …
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Opportunistic Random Media Access in WLANs
<p>This thesis proposes a new medium access protocol for IEEE 802.11 wireless local area networks, which is called opp01tunistic medium access. The protocol changes the media access opportunities of nodes by adjusting the contention window dynamically according to the different bit rates. Thereby, …
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Opportunistic plan execution monitoring and control
… in various contexts. For control, the use of opportunistic plans is examined. These can be used after failure has occurred, or when an action successfully finishes early. The definition of opportunistic plans is expanded to include extra structures that may be of use during the creation of …
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Host defense mechanisms against opportunistic pathogens
Contains fulltext : 251474.pdf (Publisher’s version ) (Open Access)
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Multimedia data dissemination in opportunistic systems
Opportunistic networks (OppNets) are human-centric mobile ad-hoc networks, in which neither the topology nor the participating nodes are known in advance. Routing is dynamically planned following the store-carry-and-forward paradigm, which takes advantage of people mobility. This widens the range …
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Opportunistic infrastructure : the Trans-Manhattan Expressway
Urban Infrastructure: bridges, expressways, and on and off ramps often create barriers and uninhabitable spaces within the urban context. This phenomenon is evident in northern Manhattan where the Trans-Manhattan Expressway has imposed profound divisions within the dense urban community of …
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Opportunistic Financial Reporting in Higher Education
Annual university rankings produced by mainstream sources, such as U.S. News and World Report, are very popular and viewed as important by a variety of university stakeholders. Consequently, universities expend a great deal of effort in an attempt to ensure they appear in the best possible light. …
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Mediating chance encounters through opportunistic social matching
… literature by exploring the design space of opportunistic social matching systems that aim to introduce relevant people to each other in the opportune moment and the opportune place in order to encourage face-to-face interaction. A theoretical framework of relational, social and personal …
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Opportunistic clock synchronization for ad hoc networks
… medium in wireless networks, allowing nodes to opportunistically correct their logical clocks in order to converge to a reference time provided by a designated root node. Our protocol does not rely on a communication structure and is lightweight due to its low overhead. We also propose a …
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U.S. opportunistic investment in European real estate
This thesis will look at the investment activities of US real estate opportunity funds after the collapse of the late 1980's and early 1990's and how their strategies have evolved over the last decade. It will investigate the strategies that these funds are currently employing in the attempt to …
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Opportunistic, collaborative and synchronized, proximal device ecology
… devices in order to create a synchronized, opportunistic and collaborative device ecology. The CoSync device ecology combines multiple stand-alone devices and controls them opportunistically as if they were one distributed, or diffuse, device at the user's fingertips. CoSync interconnects …
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Opportunistic routing in multi-hop wireless networks
This thesis describes ExOR, an integrated routing and MAC protocol for bulk transfers in multi-hop wireless networks. ExOR exploits the broadcast nature of radios by making forwarding decisions based on which nodes receive each transmission. The spatial diversity among receivers provides each …
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Availability analysis of opportunistic age replacement policies
… This last maintenance policy is called an opportunistic replacement strategy. The system functions only if the both components of the system are functioning. The system fails if either of the components fails. Component i is replaced if it fails before attaining age T<sub>i</sub> since it …
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Methylobacterium spp.: Emerging Opportunistic Premise Plumbing Pathogens
Opportunistic premise plumbing pathogens (OPPPs) are responsible for many infections linked to drinking water. The annual cost of disease caused by these waterborne pathogens is $850 million. Key characteristics of these opportunistic waterborne pathogens include: disinfectant- resistant, biofilm …
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Imperfect Monitoring in Multi-agent Opportunistic ChannelAccess
… years, extensive research has been devoted to opportunistically exploiting spectrum in a distributed cognitive radio network. In such a network, autonomous secondary users (SUs) compete with each other for better channels without instructions from a centralized authority or explicit …
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Studies of Three Human Intestinal Opportunistic Pathogens
Opportunistic bacterial pathogens are present in the intestines of all mammals. These bacteria are symbionts to a certain extent, but under certain conditions these organisms can be deadly. Intestinal opportunistic pathogens encompass many genera and include organisms such as those in the …
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Optimal forwarding in wireless networks: opportunistic network coding
… Two of the most important such methods are opportunistic routing (OR) and wireless network coding (NC), exemplified by the ExOR and COPE protocols, respectively. This thesis presents study of jointly optimizing packet delivery (in terms of reducing transmissions) of forwarding schemes in …
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