<p>Radio planning is designing of network structure and elements under various design requirements. With the increasing shortage of frequencies, radio planning has become more and more complex. Hence, to maintain accuracy and optimization computerized planning tools are needed.</p><p>This thesis focuses on developing a simplified and economical solution on web for radio planning tool using WRAP- the software for spectrum management and radio planning developed by WRAP International AB, Linköping, Sweden. In order to make WRAP calculations available for remote users it had developed APIs. The web-based WRAP needs to communicate with WRAP API server, for exchanging API messages in order to perform calculation. To make the system user friendly and interactive, latest web technologies are implemented.</p><p>In this thesis, we started development process right from requirements gathering to find out required components that need to be analyzed to find suitable web-based conversion. Further, we designed and implemented a software solution. The final part is evaluation to discover if requirements are fully implemented or not as well as to gather the performance result of the new system. It is found, the performance of web based WRAP is equally fast as desktop version for smaller coverage areas whereas, for larger coverage areas, web-based WRAP is slower than desktop version</p>

<p>We are very thirsty in terms of everything to fulfil our needs in a sophisticated way, and this leads me choose the so called master thesis titled “Multihop Concept in Cellular Systems”.</p><p>This thesis introduces an approach towards the integration of relaying or multihop scheme in the next generation of cellular networks. In a multihop cellular architecture, the users send their data to the base station via relay station or with direct communication to the base station. These relay stations can either be the nomadic, fixed at specific location or users’ mobile station (i.e. mobile relay station). The main objective of this paper is to compare the difference between the relaying network architecture with different channel bandwidth as well as their performance gain. For this we integrate the relay station into conventional cellular networks using IEEE 802.16j (One of the standard introduced relay station concept in WiMAX) OFDMA (Orthogonal Frequency Division Multiple Access is a transmission technique that is based on many orthogonal subchannels (set of carriers) that transmits simultaneously). The results show that under certain conditions the throughput and coverage of the system has been increased with the introduction of the relay station in to cellular base station zone.</p>

This thesis presents a new approach for automated test data generation of imperative programs containing integer, boolean and/or float variables. A test program (with procedure calls) is represented by an Interprocedural Control Flow Graph (ICFG). The classical testing criteria (statement, branch, and path coverage), widely used in unit testing, are extended to the ICFG. Path coverage is the core of our approach. Given a specified path of the ICFG, a path constraint is derived and solved to obtain a test case. The constraint solving is carried out based on a consistency notion. For statement (and branch) coverage, paths reaching a specified node or branch are dynamically constructed. The search for suitable paths is guided by the interprocedural control dependences of the program. The search is also pruned by our consistency filter. Finally, test data are generated by the application of the proposed path coverage algorithm. A prototype system implements our approach for C programs. Experimental results, including complex numerical programs, demonstrate the feasibility of the method and the efficiency of the system, as well as its versatility and flexibility to different classes of problems (integer and/or float variables; arrays, procedures, path coverage, statement coverage).

Peptide mass fingerprinting (PMF) of protein digests is a widely-accepted method for protein identification in MS-based proteomic studies. Matrix-assisted laser desorption/ionization mass spectrometry (MALDI) is the technique of choice in PMF experiments. The success of protein identification in a PMF experiment is directly related to the amount of amino acid sequence coverage. In an effort to increase the amount of sequence information obtained in a MALDI PMF experiment, performic acid oxidation is performed on tryptic digests of known proteins. Performic acid was chosen as the chemical oxidant due to the ease of use and to the selective oxidation of cysteine, methionine, and tryptophan residues. In experiments performed in our laboratory, performic acid oxidation either increased or did not affect protein sequence coverage in PMF experiments when oxidized tryptic digests were analyzed by MALDI. Negative mode MALDI data were acquired, as well as positive mode MALDI data, due to the enhanced ionization of cysteic acid-containing peptides in negative mode. Furthermore, the confidence in a protein match is increased by observation of mass shifts indicative of cysteine, methionine, and/or tryptophan in oxidized peptide ion signals when comparing MALDI spectra prior to performic acid oxidation and after oxidation due to the low abundance of these residues in the majority of all known and hypothetical proteins.

This thesis presents a new approach for automated test data generation of imperative programs containing integer, boolean and/or float variables. A test program (with procedure calls) is represented by an Interprocedural Control Flow Graph (ICFG). The classical testing criteria (statement, branch, and path coverage), widely used in unit testing, are extended to the ICFG. Path coverage is the core of our approach. Given a specified path of the ICFG, a path constraint is derived and solved to obtain a test case. The constraint solving is carried out based on a consistency notion. For statement (and branch) coverage, paths reaching a specified node or branch are dynamically constructed. The search for suitable paths is guided by the interprocedural control dependences of the program. The search is also pruned by our consistency filter. Finally, test data are generated by the application of the proposed path coverage algorithm. A prototype system implements our approach for C programs. Experimental results, including complex numerical programs, demonstrate the feasibility of the method and the efficiency of the system, as well as its versatility and flexibility to different classes of problems (integer and/or float variables; arrays, procedures, path coverage, statement coverage).

Die Tötung Osama bin Ladens durch ein US-Sonderkommando Anfang Mai 2011, wenige Monate vor dem zehnten Jahrestag der verheerenden Terroranschläge vom 11. September, erhielt ein großes Maß an medialer Aufmerksamkeit. Der Tod des Mannes, der für die Terroranschläge verantwortlich gemacht wurde, führte zu einer erneuten Auseinandersetzung mit diesem Ereignis und dessen individuellen und globalen Folgen. Ausgangspunkt der Untersuchung dieses Pressediskurses ist die Annahme, dass eine solche gedankliche und sprachliche Auseinandersetzung, wie sie in der Presse kreiert und reflektiert wird, insbesondere auch von Metaphern bestimmt wird. Die Untersuchung stützt sich auf die Erkenntnisse kognitiver Metapherntheorien. Sie orientiert sich aber vor allem auch an jüngeren Untersuchungen innerhalb der Metaphernforschung, die speziell die sprachliche Dimension der Metapher wieder mehr in den Vordergrund rücken. Der Arbeit liegt daher ein multidimensionales Verständnis der Metapher zugrunde. Die kognitive Funktion der Metapher ermöglicht das Begreifbarmachen abstrakter bzw. unbekannter Phänomene. Metaphern können aber zugleich auch Indikatoren für die bewusste wie auch unbewusste Bewertung von Ereignissen, Handlungen und Personen sein. Die Untersuchung verfolgt einen vergleichenden Ansatz, der auf der Grundlage eines Arbeitskorpus aus US-amerikanischen und französischen Pressetexten zur Tötung bin Ladens den Metapherngebrauch in den beiden Ländern anhand ausgewählter Themenaspekte gegenüberstellt. Ziel der Untersuchung ist es, Gemeinsamkeiten und Unterschiede zwischen den beiden Landespressen zu identifizieren und diesbezüglich mögliche Interpretationen anzugeben. Dabei wird der Sprachgebrauch im Terror-Diskurs nach 9/11 einer kritischen Betrachtung unterzogen, um ein Bewusstsein für möglicherweise unbewusste metaphorische Konzeptualisierungen zu entwickeln. Im Vergleich des Metapherngebrauchs in der US-amerikanischen und französischen Presse werden deutliche Gemeinsamkeiten festgestellt. Die analysierten Unterschiede sind häufig sprachlich bedingt. Teilweise können sie aber auch im Hinblick auf Differenzen in der Positionierung der beiden Länder in Bezug auf bin Ladens Tötung interpretiert werden. Die weitgehende Übereinstimmung in den Metaphern lässt sich zum einen auf die Nähe der beiden Sprachen, zum anderen auf den ähnlichen politischen Hintergrund der beiden westlichen Länder zurückführen. Darüber hinaus wird die Hypothese aufgestellt, dass der verstärkt stattfindende internationale Austausch von Nachrichten, vor allem über Presseagenturen, auch zunehmend zu einer Globalisierung auf dem Gebiet der Metapher führt. / The killing of Osama bin Laden by a US special task force in early May 2011, only a few months before the tenth anniversary of the devastating terror attacks of September 11, received a great deal of media attention. The death of the man who had been made responsible for the terror attacks triggered a fresh discussion of the events of 9/11 and both the individual and global consequences thereof. The starting point for an analysis of the relevant press discourse lies in the assumption that such a discussion taking place in language and thought, as it is created and reflected by the press, is to a great extent also determined by metaphors. The analysis draws on the insights of cognitive metaphor theories. It is, however, also primarily influenced by recent studies within metaphor research that aim to bring the linguistic dimension of metaphors back to the forefront. Therefore, a multidimensional understanding of metaphors forms the basis of the present study. The cognitive function of metaphors allows us to grasp abstract or unknown phenomena. Yet metaphors may further serve as indicators of conscious as well as unconscious evaluations of events, acts and people. The analysis follows a comparative approach: A study corpus of US and French press texts on the subject of bin Laden’s killing is analyzed with regard to selected aspects of the topic in order to compare the use of metaphors in the two countries. The aim of the study is to identify similarities and differences in the two countries’ press coverage and give possible interpretations for the results obtained. At the same time, the language used in the post-9/11 terror discourse is subjected to a critical examination in order to provide an understanding of metaphorical conceptualizations that are possibly unknown. In the comparison of metaphor use by the US and the French press clear similarities can be observed. The dissimilarities are often due to differences between the two languages. In some cases, however, they may be interpreted as the result of differences in the positions of the two countries on the subject of bin Laden’s killing. The extensive consistency in metaphor usage can be attributed to the closeness of the two languages as well as to the comparable political background of the two Western countries. Furthermore, it is hypothesized that the growing international exchange of news, especially via press agencies, may increasingly also lead to globalization in the field of metaphor.

This thesis is a total coverage survey of the municipal preschool management structure. In the late 90's the preschool in Sweden became the first step in the overall educational system. It became a pedagogical activity similar to school with respect to form and content. Although the focus was on education, political voices reclaimed the unique nature of preschool i.e. educare. It became a preschool in transition between its own tradition and modernization. The idea is that the educational management structure should support a pedagogical leadership that directs the pedagogical activity towards preschool objectives. The local authority sets the structure for management in pre-school; a municipality that in itself is an institution with its own goals and objectives. These objectives can place the municipalities in the cross pressure between their own objectives and the ones for preschool. The question in this respect is; How is the management structure formed and why? Is it a structure formed with the intention of creating educational management for the local preschool or are there other factors that guide the design? A framework based on the historical background of the preschools and theoretical terms such as steering, leading, management, pedagogical leadership, educational activity, etc. was constructed. Results are based on an online questionnaire survey. 180 municipalities out of 290 answered the questionnaire, which gives a response rate at 62 %. The response rate is evenly distributed across municipal categories, categories that the municipalities were aggregated into, formed by The Swedish Association of Local Authorities and Regions. The categories were handled as survey units, to support a part of the analysis and to allow a comparison between the municipalities by municipality size, both demographic and geographic. The material was analysed using the SPSS statistical program and compiled and reported with descriptive statistics. Descriptive statistics were used to demonstrate the material's characteristics and the central tendency. The results show that the municipalities’ structure of management is varied. Different municipal categories do not change this varied picture of the management landscape significantly. Although the management structure varies regarding how many levels with formal titles and which positions and functions they should have, there is a consistency in which title that the formal leader for the preschool have. The municipalities primarily utilisea principalship with mixed responsibility for both preschool and school. In light of these results, do municipalities mould a structure for the educational management for the pedagogical activities in preschool? Yes and no: the municipalities do not form a structure for preschool alone. Results show that the municipalities' main purpose is not to create a line of management specifically for the preschool. The municipalities form a management structure for educational purposes dealing with an educational activity from preschool to elementary school. The new Education Act (2010:800), is a step toward distinguishing preschool leadership from school leadership and turns the leadership of preschools into a title solely for the position and function of preschool educational activities.

Recently, wireless sensor network (WSN) has become a promising technology with a wide range of applications such as supply chain monitoring and environment surveillance. It is typically composed of multiple tiny devices equipped with limited sensing, computing and wireless communication capabilities. Design of such networks presents several technique challenges while dealing with various requirements and diverse constraints. Performance analysis and deployment techniquesare required to provide insight on design parameters and system behaviors. Based on network calculus, a deterministic analysis method is presented for evaluating the worst-case delay and buffer cost of sensor networks. To this end,traffic splitting and multiplexing models are proposed and their delay and buffer bounds are derived. These models can be used in combination to characterize complex traffic flowing scenarios. Furthermore, the method integrates a variable duty cycle to allow the sensor nodes to operate at low rates thus saving power. In an attempt to balance traffic load and improve resource utilization and performance,traffic splitting mechanisms are introduced for sensor networks with general topologies. To provide reliable data delivery in sensor networks, retransmission has been one of the most popular schemes. We propose an analytical method to evaluate the maximum data transmission delay and energy consumption of two types of retransmission schemes: hop-by-hop retransmission and end-to-end retransmission.In order to validate the tightness of the bounds obtained by the analysis method, the simulation results and analytical results are compared with various input traffic loads. The results show that the analytic bounds are correct and tight. Stochastic network calculus has been developed as a useful tool for Qualityof Service (QoS) analysis of wireless networks. We propose a stochastic servicecurve model for the Rayleigh fading channel and then provide formulas to derive the probabilistic delay and backlog bounds in the cases of deterministic and stochastic arrival curves. The simulation results verify that the tightness of the bounds are good. Moreover, a detailed mechanism for bandwidth estimation of random wireless channels is developed. The bandwidth is derived from the measurement of statistical backlogs based on probe packet trains. It is expressed by statistical service curves that are allowed to violate a service guarantee with a certain probability. The theoretic foundation and the detailed step-by-step procedure of the estimation method are presented. One fundamental application of WSNs is event detection in a Field of Interest(FoI), where a set of sensors are deployed to monitor any ongoing events. To satisfy a certain level of detection quality in such applications, it is desirable that events in the region can be detected by a required number of sensors. Hence, an important problem is how to conduct sensor deployment for achieving certain coverage requirements. In this thesis, a probabilistic event coverage analysis methodis proposed for evaluating the coverage performance of heterogeneous sensor networks with randomly deployed sensors and stochastic event occurrences. Moreover,we present a framework for analyzing node deployment schemes in terms of three performance metrics: coverage, lifetime, and cost. The method can be used to evaluate the benefits and trade-offs of different deployment schemes and thus provide guidelines for network designers. / <p>QC 20120906</p>

Background: Globally, and in Sweden, passenger railway transport is steadily increasing. Sweden has been relatively free from severe train crashes in the last decades, but the railway infrastructure is alarmingly worn and overburdened, which may be one reason for an increasing number of reported mishaps. Worldwide, major train crashes/disasters are a frequent cause of mass casualty incidents. Several shortcomings, especially within the crash and post-crash phases cause severe consequences for the passengers. Aim: To investigate the consequences of train crashes on passengers, focusing on factors of importance in the crash and post-crash phases. The specific aims are: (I) to identify the historical development and magnitude of passenger train disasters globally on various continents and countries, (II, III) to identify injury panorama and injury objects in two train crashes, (IV) to explore survivor´s experiences from a train crash, and (V) to explore their experiences of journalists and media coverage. Methods: Study I is a register study based on 529 railway disasters worldwide, whereas studies II-V are case studies from the two latest severe train crashes in Sweden (Nosaby and Kimstad). These studies are based on 73 and 21 passengers respectively. Studies I-III is essentially quantitative where descriptive statistics (I, III), multivariate analysis (III), and content analysis (II, III) are used. Studies II and III are also supplemented by semi-structured interviews. Studies IV and V are qualitative and the interviews (n=14, n=30) have been analyzed with qualitative content analysis. Study IV is also supplemented with quantitative data. Results: The number of railway disasters, fatalities, and non-fatally injured passengers has increased throughout the last hundred years - particularly during the last four decades (1970–2009) when 88% of all disasters occurred (I). Passengers in the first overturned carriage suffered most severe and lethal injuries (III). Internal structures such as tables, chairs, internal walls, as well as luggage, other passengers (II, III), glass (II), and wood pellets (III) induced many of the injuries. Those who traveled facing forward with a table in front of them, in carriages that did not overturn, were more likely to sustain injuries to their abdomen/pelvis than those without a table (III). Passengers who traveled rear facing had higher rates of whiplash injuries. Surviving a train crash was experienced as "living in a mode of existential threat". The long term consequences however were diverse for different persons (IV). All experienced that they had cheated death, but some became "shackled by history", whereas others overcame the "haunting of unforgettable memories." The centrality of others and the importance of reconstructing the turn of events were important when "dealing with the unthinkable". The media coverage were experienced as positive in the recovery process and the journalists were also perceived as helpful (V). By some the journalist’s nevertheless were also perceived as harmful or negligible, and the subsequent media coverage as either uncomfortable or insignificant. Conclusion: Despite extensive crash avoidance systems severe railway crashes still occur. Improved interior safety, as has been implemented in the automobile and aviation industries, would have an important reduction in injuries and facilitate evacuation. Being surrounded by family, friends, fellow passengers and participating in crash investigations, and experiencing descriptive media coverage were some crucial factors when dealing with the traumatic event and should be promoted.

<p>The study utilized a qualitative case study design to explore the problem of poor access to ART in Benue State. PLWHAs, policy makers, program managers and health workers were involved in an effort to describe the factors influencing access to ART in the State. Semi structured interviews, exit interviews and focus group discussions were used. To analyse the findings, categorization was done into facilitators and barriers to access, in addition to the ways respondents believe these barriers can be overcome. Other sub-themes were also identified and sorted. Themes were linked to direct quotes from the respondents. Additional literature review was done to review available information on the themes identified. Facilitators of access included free cost and increased number of sites / beneficial effects of ART / disclosure, membership in a support group and having a treatment partner. Barriers included stigma and discrimination / hunger, poverty, transportation and opportunity costs / hospital factors / non-disclosure / inaccurate knowledge and perceptions about HIV and ART / certain religious beliefs and advice / coverage, capping of services and fear of non-availability of ART. In addition to stigma, patients bypass closer ART access points to further away hospitals because of business opportunities / financial assistance / perceived better standard of care and hope that a cure, when found, will be more accessible to patients in bigger hospitals.</p>