On March 19, 2003, the United States military led a "pre-emptive" strike on Iraq, thrusting media into a heightened responsibility to keep the American public informed. By May 1, 2003, President George W. Bush had officially declared the war over, but at the time of this study, Spring 2005, violence prevailed in Iraq.Throughout the Iraq War, different styles of print media coverage appeared between the United States and German presses – reflective of each country's stance on the Iraq war. As influenced by numerous factors, U.S. and German newspapers covered the Iraq conflict in different ways. Several predictions resulted from considerations of nationality and political stance on the Iraq war.To assess the accuracy of those predictions, a content analysis was conducted. Two independent variables were named--the German newspaper, Frankfurter Allgemeine Zeitung (FAZ) and the U.S. newspaper, the Washington Post.The results gleaned from the analysis were examined with a chi-square, and most were found to be significant: As hypothesized, both U.S. and German newspapers overwhelmingly featured official sources. This meant that the media did not fulfill its watchdog function, but instead, allowed officials to frame the story of war.Although each country was viewing the war through official sources, those sources accentuated different aspects of the war and often carried strong positive or negative tones. The Washington Post carried more neutral sources, whereas the Frankfurt Allgemeine Zeitung carried more negative sources. With a clear sentiment against the war, German newspapers more often featured sources who weren't active players in the war and non-American, non-Iraqi sources in their articles, thus attempting to offer more balanced reporting. This study may offer an explanation as to why the United States and Germany shared such opposing opinions about the Iraq War–each country's citizens experienced the news from different perspectives. / Department of Journalism

abstract: A Cyber Physical System consists of a computer monitoring and controlling physical processes usually in a feedback loop. These systems are increasingly becoming part of our daily life ranging from smart buildings to medical devices to automobiles. The controller comprises discrete software which may be operating in one of the many possible operating modes and interacting with a changing physical environment in a feedback loop. The systems with such a mix of discrete and continuous dynamics are usually termed as hybrid systems. In general, these systems are safety critical, hence their correct operation must be verified. Model Based Design (MBD) languages like Simulink are being used extensively for the design and analysis of hybrid systems due to the ease in system design and automatic code generation. It also allows testing and verification of these systems before deployment. One of the main challenges in the verification of these systems is to test all the operating modes of the control software and reduce the amount of user intervention. This research aims to provide an automated framework for the structural analysis and instrumentation of hybrid system models developed in Simulink. The behavior of the components introducing discontinuities in the model are automatically extracted in the form of state transition graphs. The framework is integrated in the S-TaLiRo toolbox to demonstrate the improvement in mode coverage. / Dissertation/Thesis / Masters Thesis Computer Science 2016

Magister Public Health - MPH / The aim of the study was to describe immunization coverage for DPT, Polio and Measles among children of ages between 12 to 18 months in Kawempe Division and to investigate factors associated with immunization coverage. A cross-sectional survey was conducted in 239 households with children aged between 12-18 months in five villages that were selected through multi-stage cluster sampling. Information on demographic and socio-economic factors and immunization status was obtained from mothers and caretakers. Immunization coverage and analysis of associations between immunization coverage and demographic and socio-economic factors were done. / South Africa

The media’s role is to disseminate accurate and objective information about particular phenomena but the media itself is rarely an objective institution. In international relations, the media exists as a non-state actor, able to exert power through its representation, reinforcement and the possibility to challenge the narrative of a particular conflict or intervention. The hypothesis of this paper is that the media does not play the role of neutral observer in a conflict. Using the New York Times’ coverage at the start of the Darfur conflict in 2004 as a case study, this paper discusses how the newspaper reported on the conflict, exploring how the description of the conflict, its root cause and actors involved, as created by the coverage as well as the calls for international intervention demonstrates the role of the media as a nonstate actor. Using discourse analysis and discussing power and representation through language and framing, it links international relations theory with that of media theory to show how the media is situated within discourse, where it creates and recreates historical representation. This paper suggests that through a more nuanced description of the Darfur conflict and subsequent intervention and more interrogation of the accepted narrative, the media could have created a richer contribution to the existing discourse on the Darfur conflict specifically and conflict in general.

Yes / Unmanned Aerial Vehicles (UAVs) are considered, nowadays, as a futuristic and robust paradigm for 5G wireless networks, in terms of providing Internet connectivity services onto infrastructure cellular networks. In this paper, the interference regime caused by multiple downlink aerial wireless transmission beams has been highlighted. This has been introduced by estimating the UAVs coverage area that is analytically derived in a tractable closed-form expression. The rationale of the analysed coverage approach relies on observing and adapting the joint aerial distance between the aerial base stations. This can minimize the intra-overlapped coverage and ultimately maximize the overall coverage performance for a better quality of service demands. The novelty of our approach brings useful design insights for UAVs system-level performance that technically helps in aerial coverage computations without the need of performing an aerial deployment setup. To the end, the performance effectiveness of our methodology has been tested under an urban propagation environment conditions, in which the original probabilistic channel model approximation has been taken into account. Moreover, this paper identifies the interference issue of such an aerial network as a shrinkage or distortion phenomenon.

Wireless network virtualization (WNV) and millimeter wave (mmW) communications are emerging as two key technologies for cellular networks. Virtualization in cellular networks enables wireless services to be decoupled from network resources (e.g., infrastructure and spectrum) so that multiple virtual networks can be built using a shared pool of network resources. At the same time, utilization of the large bandwidth available in mmW frequency band would help to overcome ongoing spectrum scarcity issues. In this context, this dissertation presents efficient frameworks for building virtual networks in sub-6 GHz and mmW bands. Towards developing the frameworks, first, we derive a closed-form expression for the downlink rate coverage probability of a typical sub-6 GHz cellular network with known base station (BS) locations and stochastic user equipment (UE) locations and channel conditions. Then, using the closed-form expression, we develop a sub-6 GHz virtual resource allocation framework that aggregates, slices, and allocates the sub-6 Ghz network resources to the virtual networks in such a way that the virtual networks' sub-6 GHz downlink coverage and rate demands are probabilistically satisfied while resource over-provisioning is minimized in the presence of uncertainty in UE locations and channel conditions. Furthermore, considering the possibility of lack of sufficient sub-6 GHz resources to satisfy the rate coverage demands of all virtual networks, we design a prioritized sub-6 GHz virtual resource allocation scheme where virtual networks are built sequentially based on their given priorities. To this end, we develop static frameworks that allocate sub-6 GHz resources in the presence of uncertainty in UE locations and channel conditions, i.e., before the UE locations and channel conditions are revealed. As a result, when a slice of a BS serves its associated UEs, it can be over-satisfied (i.e., resources left after satisfying the rate demands of all UEs) or under-satisfied (i.e., lack of resources to satisfy the rate demands of all UEs). On the other hand, it is extremely challenging to execute the entire virtual resource allocation process in real time due to the small transmission time intervals (TTIs) of cellular technologies. Taking this into consideration, we develop an efficient scheme that performs the virtual resource allocation in two phases, i.e., virtual network deployment phase (static) and statistical multiplexing phase (adaptive). In the virtual network deployment phase, sub-6 GHz resources are aggregated, sliced, and allocated to the virtual networks considering the presence of uncertainty in UE locations and channel conditions, without knowing which realization of UE locations and channel conditions will occur. Once the virtual networks are deployed, each of the aggregated BSs performs statistical multiplexing, i.e., allocates excess resources from the over-satisfied slices to the under-satisfied slices, according to the realized channel conditions of associated UEs. In this way, we further improve the sub-6 GHz resource utilization. Next, we steer our focus on the mmW virtual resource allocation process. MmW systems typically use beamforming techniques to compensate for the high pathloss. The directional communication in the presence of uncertainty in UE locations and channel conditions, make maintaining connectivity and performing initial access and cell discovery challenging. To address these challenges, we develop an efficient framework for mmW virtual network deployment and UE assignment. The deployment decisions (i.e., the required set of mmW BSs and their optimal beam directions) are taken in the presence of uncertainty in UE locations and channel conditions, i.e., before the UE locations and channel conditions are revealed. Once the virtual networks are deployed, an optimal mmW link (or a fallback sub-6 GHz link) is assigned to each UE according to the realized UE locations and channel conditions. Our numerical results demonstrate the gains brought by our proposed scheme in terms of minimizing resource over-provisioning while probabilistically satisfying virtual networks' sub-6 GHz and mmW demands in the presence of uncertainty in UE locations and channel conditions. / Doctor of Philosophy / In cellular networks, mobile network operators (MNOs) have been sharing resources (e.g., infrastructure and spectrum) as a solution to extend coverage, increase capacity, and decrease expenditures. Recently, due to the advent of 5G wireless services with enormous coverage and capacity demands and potential revenue losses due to over-provisioning to serve peak demands, the motivation for sharing and virtualization has significantly increased in cellular networks. Through wireless network virtualization (WNV), wireless services can be decoupled from the network resources so that various services can efficiently share the resources. At the same time, utilization of the large bandwidth available in millimeter wave (mmW) frequency band would help to overcome ongoing spectrum scarcity issues. However, due to the inherent features of cellular networks, i.e., the uncertainty in user equipment (UE) locations and channel conditions, enabling WNV and mmW communications in cellular networks is a challenging task. Specifically, we need to build the virtual networks in such a way that UE demands are satisfied, isolation among the virtual networks are maintained, and resource over-provisioning is minimized in the presence of uncertainty in UE locations and channel conditions. In addition, the mmW channels experience higher attenuation and blockage due to their small wavelengths compared to conventional sub-6 GHz channels. To compensate for the high pathloss, mmW systems typically use beamforming techniques. The directional communication in the presence of uncertainty in UE locations and channel conditions, make maintaining connectivity and performing initial access and cell discovery challenging. Our goal is to address these challenges and develop optimization frameworks to efficiently enable virtualization and mmW technologies in cellular networks.

Lam Kwan Heung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (leaves 135-137). / Abstracts in English and Chinese; appendices in English with some Chinese. / Abstract --- p.ii-iv / Acknowledgement --- p.v / Table of Contents --- p.vi / Chapter Chapter 1 --- Introduction --- p.1-6 / Chapter Chapter 2 --- Literature Review --- p.7-22 / Chapter Chapter 3 --- Research Methods --- p.23-35 / Chapter Chapter 4 --- An Overview on Hainan --- p.36-46 / Chapter Chapter 5 --- Framing of Hainan --- p.47-92 / Chapter ´Ø --- International law and order / Chapter ´Ø --- U.S. peacekeeping surveillance / Chapter ´Ø --- Victimized U.S / Chapter Chapter 6 --- Framing of China --- p.93-125 / Chapter ´Ø --- China's skewed media / Chapter ´Ø --- China as a problematic communist state / Chapter ´Ø --- China as a secretive military power / Chapter ´Ø --- China's aggression towards Taiwan / Chapter ´Ø --- China's buying off U.S. politicians / Chapter Chapter 7 --- Conclusion --- p.126-134 / Bibliography --- p.135-137 / Appendices --- p.138-182

Wireless sensor networks (WSNs) have recently attracted a great deal of attention due to their numerous attractive applications in many different fields. Sensors and WSNs possess a number of special characteristics that make them very promising in a wide range of applications, but they also put on them lots of constraints that make issues in sensor network particularly challenging. These issues may include topology control, routing, coverage, security, data management and many others. Among them, coverage problem is one of the most fundamental ones for which a WSN has to watch over the environment such as a forest (area coverage) or set of subjects such as collection of precious renaissance paintings (target of point coverage) in order for the network to be able to collect environment parameters, and maybe further monitor the environment. In this dissertation, we highly focus on the area coverage problem. With no assumption of sensors’ locations (i.e., the sensor network is randomly deployed), we only consider distributed and parallel scheduling methods with the ultimate objective of maximizing network lifetime. Additionally, the proposed solutions (including algorithms, a scheme, and a framework) have to be energy-efficient. Generally, we investigate numerous generalizations and variants of the basic coverage problem. Those problems of interest include k-coverage, composite event detection, partial coverage, and coverage for adjustable sensing range network. Various proposed algorithms. In addition, a scheme and a framework are also suggested to solve those problems. The scheme, which is designed for emergency alarming applications, specifies the guidelines for data and communication patterns that significantly reduce the energy consumption and guarantee very low notification delay. For partial coverage problem, we propose a universal framework (consisting of four strategies) which can take almost any complete-coverage algorithm as an input to generate an algorithm for partial coverage. Among the four strategies, two pairs of strategies are trade-off in terms of network lifetime and coverage uniformity. Extensive simulations are conducted to validate the efficiency of each of our proposed solutions.

The suicide and the media research field are generally concerned with the effect, content, and production of mass-disseminating suicide information. Most of the previous studies in the field were conducted in western countries. This dissertation is devoted to extending the research map to the Chinese contexts and moving the field forward into the new media era. It proposes a conceptual framework based on the social construction of reality theory and refines the framework through a combination of five studies. Study 1 might be the first investigation on mass-disseminating suicide information’s effect on suicide occurrences in Mainland China, using the Foxconn suicides as a case study. It finds that the Foxconn suicides were temporally clustered and influenced by inter-person contagion within the company, as well as the newspapers’ reporting about the topic in Beijing, the nation’s capital. Study2 examines the prominence and representation patterns of reporting the Foxconn suicides in Mainland China, Hong Kong, and Taiwan in 2010 calendar year. It demonstrates that the media coverage of the Foxconn suicides in the three societies generally experienced a three-phase evolving process in 2010. Meanwhile, within every phase, the media in different societies showed differences in their representations. Furthermore, the study investigates how the representation can be influenced by news sources and social contexts and explores possible explanations why the Beijing media’s reporting influenced the occurrences of the Foxconn suicides. Study3 compares representation of suicides in case-control psychological autopsy studies with representation of the same suicides in Hong Kong media. Considering the psychological autopsy as relatively more rigorous and validated, the comparison examines the suicide news representation’s accuracy and stereotyping tendencies. It finds a strong homogenisation of the Hong Kong newspapers in accurately reporting suicide methods but inaccurately reporting suicide risk factors, and that their reporting was problematic in stereotyping of gender-and method-specific suicides. Study 4 is a qualitative study of 33newspaper journalists’ experiences with producing suicide news from representative daily newspapers in Mainland China, Hong Kong, and Taiwan. Utilising the grounded theory method, it extracts how the journalists construct media reality of suicide within a social context. The study summarises criteria of suicide news values, identifies three types of key agents which are often engaged by the journalists in constructing suicide news, and also generates a comparative framework of suicide news production in the Chinese contexts. Study 5 examines what suicide-related information is easily accessible online in Mainland China and Hong Kong and compares it with its counterparts in English. It explores how the comparative framework proposed by Study 4 can also be applied to understand the nature of the online suicide information and serves as a bridge connecting the thesis with future studies on suicide and the new media. The five studies collectively contribute to understanding the nature and mechanism of constructing media reality of suicide in the Chinese contexts. By applying the research findings, suicide prevention professionals would be able to develop context-sensitive strategies to cooperate with the media and prevent suicide. / published_or_final_version / Social Work and Social Administration / Doctoral / Doctor of Philosophy

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