367,760 research outputs found

    Towards a comprehensive framework for secure systems development

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    Security involves technical as well as social challenges. In the development of security-critical applications, system developers must consider both the technical and the social parts. To achieve this, security issues must be considered during the whole development life-cycle of an information system. This paper presents an approach that allows developers to consider both the social and the technical dimensions of security through a structured and well defined process. In particular, the proposed approach takes the high-level concepts and modelling activities of the secure Tropos methodology and enriches them with a low level security-engineering ontology and models derived from the UMLsec approach. A real case study from the e-commerce sector is employed to demonstrate the applicability of the approach

    BOF4WSS : a business-oriented framework for enhancing web services security for e-business

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    When considering Web services' (WS) use for online business-to-business (B2B) collaboration between companies, security is a complicated and very topical issue. This is especially true with regard to reaching a level of security beyond the technological layer, that is supported and trusted by all businesses involved. With appreciation of this fact, our research draws from established development methodologies to develop a new, business-oriented framework (BOF4WSS) to guide e-businesses in defining, and achieving agreed security levels across these collaborating enterprises. The approach envisioned is such that it can be used by businesses-in a joint manner-to manage the comprehensive concern that security in the WS environment has become

    Will SDN be part of 5G?

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    For many, this is no longer a valid question and the case is considered settled with SDN/NFV (Software Defined Networking/Network Function Virtualization) providing the inevitable innovation enablers solving many outstanding management issues regarding 5G. However, given the monumental task of softwarization of radio access network (RAN) while 5G is just around the corner and some companies have started unveiling their 5G equipment already, the concern is very realistic that we may only see some point solutions involving SDN technology instead of a fully SDN-enabled RAN. This survey paper identifies all important obstacles in the way and looks at the state of the art of the relevant solutions. This survey is different from the previous surveys on SDN-based RAN as it focuses on the salient problems and discusses solutions proposed within and outside SDN literature. Our main focus is on fronthaul, backward compatibility, supposedly disruptive nature of SDN deployment, business cases and monetization of SDN related upgrades, latency of general purpose processors (GPP), and additional security vulnerabilities, softwarization brings along to the RAN. We have also provided a summary of the architectural developments in SDN-based RAN landscape as not all work can be covered under the focused issues. This paper provides a comprehensive survey on the state of the art of SDN-based RAN and clearly points out the gaps in the technology.Comment: 33 pages, 10 figure

    Urban planning law in Liberia: the case for a transformational approach

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    This article discusses the need for a fundamental rethinking of urban planning in Liberia with special reference to Monrovia, the capital. Liberia is a post-conflict country and is facing a multitude of problems. One is the very rapid urbanisation of the country. Well over 50% of the population live in urban areas, and over one million people—one third of the population—live in Monrovia, for the most part in informal ‘illegal’ settlements with few facilities. Despite land issues being acknowledged as in need of being tackled as a matter of urgency, little has been done by the Johnson-Sirleaf government since it came to power in 2006. What is needed and what this article argues for is a plan for the development of Monrovia based on the Right to the City with residents given clear rights to land and to participate in the governance of their city. The approach is denominated as a transformational one, taking its inspiration from van der Walt’s approach set out in his Property in the Margins. The need for and the outline of an Urban Transformation Act are set out in the article which concludes with a warning that it cannot be supposed that the residents of Monrovia will continue indefinitely to put up with their very poor living conditions

    The United Nations Sustainable Development Goals: Achieving the Vision of Global Health with Justice

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    We are resolved to free the human race from the tyranny of poverty and want and to heal and secure our planet” (UN General Assembly, 2015, September 25, preamble). So pronounces the 2030 Agenda, the United Nations declaration on the Sustainable Development Goals (SDGs), adopted on September 25, 2015, succeeding the Millennium Development Goals (MDGs). If achieved, the SDGs will secure an improved level of health, development, and global justice. However, if the international community fails to live up to its commitments, an untold number of people will likely perish prematurely, people’s opportunities to thrive will be cut off, social dynamics will continue to leave people behind, and unsustainable environmental pathways will create risks to the health and well-being of generations to come. Here, we systematically review the MDGs—specifically, their formation, achievements, and shortcomings. Next, we review the transition to the SDGs—how they differ from the MDGs, some of the critical challenges they present, and suggestions for a response to these challenges, using a human rights-based approach. Finally, we will offer early markers to assess whether states are sincere in their commitment to longer, healthier lives for all, and offer a next step to ensure that commitment: a global health treaty based on the right to health—embodying the vision of global health with justice
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