On Track or Off The Rails?

In order to achieve a transition from a transport system centred on the individual car to one centred on (electrified) rail a new focus in infrastructure planning is needed. The preparation of project proposals for the Federal Transport Infrastructure Plan 2030 on the sub-national level in Germany provides an opportunity to study decision-making processes in ministries and compare their respective results in this respect. Using document analysis, expert interviews, qualitative content analysis as well as QCA, this thesis in political science analyses how decision-making processes within bureaucracies impact the decision output in transport infrastructure planning. It contributes to the discussion on bureaucracy-politics interactions that is relevant beyond the German case. One result is that ministries tend to use complex decision-making processes for topics deemed salient as long as the available capacity permits it. Consequently, in order to conduct legitimacy-enhancing steps – such as public participation – a well-funded bureaucracy is indispensable

Secure Connectivity With Persistent Identities

In the current Internet the Internet Protocol address is burdened with two roles. It serves as the identifier and the locator for the host. As the host moves its identity changes with its locator. The research community thinks that the Future Internet will include identifier-locator split in some form. Identifier-locator split is seen as the solution to multiple problems. However, identifier-locator split introduces multiple new problems to the Internet. In this dissertation we concentrate on: the feasibility of using identifier-locator split with legacy applications, securing the resolution steps, using the persistent identity for access control, improving mobility in environments using multiple address families and so improving the disruption tolerance for connectivity. The proposed methods achieve theoretical and practical improvements over the earlier state of the art. To raise the overall awareness, our results have been published in interdisciplinary forums.Nykypäivän Internetissä IP-osoite on kuormitettu kahdella eri roolilla. IP toimii päätelaitteen osoitteena, mutta myös usein sen identiteetinä. Tällöin laitteen identiteetti muuttuu laitteen liikkuessa, koska laitteen osoite vaihtuu. Tutkimusyhteisön mielestä paikan ja identiteetin erottaminen on välttämätöntä tulevaisuuden Internetissä. Paikan ja identiteetin erottaminen tuo kuitenkin esiin joukon uusia ongelmia. Tässä väitöskirjassa keskitytään selvittämään paikan ja identiteetin erottamisen vaikutusta olemassa oleviin verkkoa käyttäviin sovelluksiin, turvaamaan nimien muuntaminen osoitteiksi, helpottamaan pitkäikäisten identiteettien käyttöä pääsyvalvonnassa ja parantamaan yhteyksien mahdollisuuksia selviytyä liikkumisesta usean osoiteperheen ympäristöissä. Väitöskirjassa ehdotetut menetelmät saavuttavat sekä teoreettisia että käytännön etuja verrattuna aiempiin kirjallisuudessa esitettyihin menetelmiin. Saavutetut tulokset on julkaistu eri osa-alojen foorumeilla

Performance analysis of a database caching system in a grid environment

Tese de mestrado. Engenharia Informática. Faculdade de Engenharia. Universidade do Porto. 200

The Proceedings of 14th Australian Information Security Management Conference, 5-6 December 2016, Edith Cowan University, Perth, Australia

The annual Security Congress, run by the Security Research Institute at Edith Cowan University, includes the Australian Information Security and Management Conference. Now in its fourteenth year, the conference remains popular for its diverse content and mixture of technical research and discussion papers. The area of information security and management continues to be varied, as is reflected by the wide variety of subject matter covered by the papers this year. The conference has drawn interest and papers from within Australia and internationally. All submitted papers were subject to a double blind peer review process. Fifteen papers were submitted from Australia and overseas, of which ten were accepted for final presentation and publication. We wish to thank the reviewers for kindly volunteering their time and expertise in support of this event. We would also like to thank the conference committee who have organised yet another successful congress. Events such as this are impossible without the tireless efforts of such people in reviewing and editing the conference papers, and assisting with the planning, organisation and execution of the conferences. To our sponsors also a vote of thanks for both the financial and moral support provided to the conference. Finally, thank you to the administrative and technical staff, and students of the ECU Security Research Institute for their contributions to the running of the conference

The Normative Order of the Internet: A Theory of Rule and Regulation Online

There is order on the internet, but how has this order emerged and what challenges will threaten and shape its future? This study shows how a legitimate order of norms has emerged online, through both national and international legal systems. It establishes the emergence of a normative order of the internet, an order which explains and justifies processes of online rule and regulation. This order integrates norms at three different levels (regional, national, international), of two types (privately and publicly authored), and of different character (from ius cogens to technical standards). The author assesses their internal coherence, their consonance with other order norms and their consistency with the order's finality. The normative order of the internet is based on and produces a liquefied system characterized by self-learning normativity. In light of the importance of the socio-communicative online space, this is a book for anyone interested in understanding the contemporary development of the internet.

A distributed analysis and monitoring framework for the compact Muon solenoid experiment and a pedestrian simulation

This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The design of a parallel and distributed computing system is a very complicated task. It requires a detailed understanding of the design issues and of the theoretical and practical aspects of their solutions. Firstly, this thesis discusses in detail the major concepts and components required to make parallel and distributed computing a reality. A multithreaded and distributed framework capable of analysing the simulation data produced by a pedestrian simulation software was developed. Secondly, this thesis discusses the origins and fundamentals of Grid computing and the motivations for its use in High Energy Physics. Access to the data produced by the Large Hadron Collider (LHC) has to be provided for more than five thousand scientists all over the world. Users who run analysis jobs on the Grid do not necessarily have expertise in Grid computing. Simple, userfriendly and reliable monitoring of the analysis jobs is one of the key components of the operations of the distributed analysis; reliable monitoring is one of the crucial components of the Worldwide LHC Computing Grid for providing the functionality and performance that is required by the LHC experiments. The CMS Dashboard Task Monitoring and the CMS Dashboard Job Summary monitoring applications were developed to serve the needs of the CMS community

Automatic Detection and Classification of Identifier Renamings

RÉSUMÉ Le lexique du code source joue un rôle primordial dans la maintenabilité des logiciels. Un lexique pauvre peut induire à une mauvaise compréhension du programme et à l'augmentation des erreurs du logiciel. Il est donc important que les développeurs maintiennent le lexique de leur code source en renommant les identifiants afin qu'ils reflètent les concepts qu'ils expriment. Dans cette thèse, nous étudions le lexique et proposons une approche pour détecter et classifier les renommages des identifiants dans le code source. La détection des renommages est basée sur la combinaison de deux techniques: la différenciation des codes sources et l'analyse de flux de données. Tandis que le classificateur de renommage utilise une base de données ontologique et un analyseur syntaxique du langage naturel pour classer les renommages selon la taxonomie que nous avons défini. Afin d'évaluer l'exactitude et l'exhaustivité du détecteur de renommage, nous avons réalisé une étude empirique sur l’historique de cinq programmes Java open-source. Les résultats de cette étude rapportent une précision de 88% et un rappel 92%. Nous avons également mené une étude exploratoire qui analyse et discute comment les identifiants sont renommés, selon la taxonomie proposée, dans les cinq programmes Java de l’étude précédente. Les résultats de cette étude exploratoire montrent qu’il existe des renommages dans chaque dimension de notre taxonomie. Afin d’appliquer l’approche proposée aux programmes PHP, nous avons adapte notre détecteur de renommages pour prendre en compte les caractéristiques inhérentes à ces programmes. Une étude préliminaire effectuée sur trois programmes PHP montre que notre approche est applicable aux programmes PHP. Cependant, ces programmes ont des tendances de renommages différentes de celles observées dans les programmes Java. Cette thèse propose deux résultats. Tout d'abord, la détection et la classification des renommages et un outil, qui peut être utilisé pour documenter les renommages. Les développeurs seront en mesure de, par exemple, rechercher des méthodes qui font partie de l’interface de programmation car celles-ci impactent les applications clientes. Ils pourront également identifier les incohérences entre le nom et la fonctionnalité d'une entité en cas de renommage dit risqué comme lors d’un renommage vers un antonyme. Deuxièmement, les résultats de nos études nous fournissent des leçons qui constituent une base de connaissance et de conseils pouvant aider les développeurs à éviter des renommages inappropriés ou inutiles et ainsi maintenir la cohérence du lexique de leur code source.----------ABSTRACT Source code lexicon plays a paramount role in software maintainability: a poor lexicon can lead to poor comprehensibility and increase software fault-proneness. For this reason, developers should maintain their source code lexicon by renaming identifiers when they do not reflect the concepts that they should express. In this thesis, we study lexicon and propose an approach to detect and classify identifier renamings in source code. The renaming detection is based on a combination of source code differencing and data flow analysis, while the renaming classifier uses an ontological database and a natural language parser to classify renamings according to a taxonomy we define. We report a study—conducted on the evolution history of five open-source Java programs—aimed at evaluating the accuracy and completeness of the renaming detector. The study reports a precision of 88% and a recall of 92%. In addition, we report an exploratory study investigating and discussing how identifiers are renamed in the five Java programs, according to our taxonomy. Moreover, we report the challenges and applicability of the proposed approach to PHP programs and report our preliminary results of renaming detection and classification for three programs. This thesis provides two outcomes. First, the renaming detection and classification approach and tool, which can be used for documenting renamings. Developers will be able to, for example, look up methods that are part of the public API (as they impact client applications), or look for inconsistencies between the name and the implementation of an entity that underwent a high risk renaming (e.g., towards the opposite meaning). Second, pieces of actionable knowledge, based on our qualitative study of renamings, that provide advice on how to avoid some unnecessary renamings