This paper investigates the relationship between software development methodologies and usability. The point of departure is the assumption that two important disciplines in software development, one of software development methods (SDMs) and one of usability work, are not integrated in industrial software projects.Building on previous research we investigate two questions; (1) Will software companies generally acknowledge the importance of usability, but not prioritise it in industrial projects? and (2) To what degree are software development methods and usability perceived by practitioners as being integrated? To this end a survey in the Norwegian IT industry was conducted. From a sample of 259 companies we received responses from 78 companies.In response to our first research question, our findings show that although there is a positive bias towards usability, the importance of usability testing is perceived to be much less than that of usability requirements. Given the strong time and cost pressures associated with the software industry, we believe that these results highlight that there is a gap between intention and reality. Regarding our second research question our survey revealed that companies perceive usability and software development methods to be integrated. This is in contrast to earlier research, which, somewhat pessimistically, has argued for the existence of two different cultures, one of software development and one of usability. The findings give hope for the future, in particular because the general use of system development methods are pragmatic and adaptable.
Abstract-Dominated by delay-sensitive and massive data applications, radio resource management in 5G access networks is expected to satisfy very stringent delay and packet loss requirements. In this context, the packet scheduler plays a central role by allocating user data packets in the frequency domain at each predefined time interval. Standard scheduling rules are known limited in satisfying higher Quality of Service (QoS) demands when facing unpredictable network conditions and dynamic traffic circumstances. This paper proposes an innovative scheduling framework able to select different scheduling rules according to instantaneous scheduler states in order to minimize the packet delays and packet drop rates for strict QoS requirements applications. To deal with real-time scheduling, the Reinforcement Learning (RL) principles are used to map the scheduling rules to each state and to learn when to apply each. Additionally, neural networks are used as function approximation to cope with the RL complexity and very large representations of the scheduler state space. Simulation results demonstrate that the proposed framework outperforms the conventional scheduling strategies in terms of delay and packet drop rate requirements.
Abstract-Deliberate practice is important in many areas, including learning to program computers. However, beliefs about the nature of personal traits, known as mindsets, can have a profound impact on such practice. Previous research has shown that those with a fixed mindset believe their traits cannot change and tend to reduce their level of practice when they encounter difficulty. In contrast, those with the growth mindset believe their traits are flexible and tend to maintain regular practice despite the level of difficulty. However, focusing on mindset as a single construct focused on intelligence may not be appropriate in the field of computer programming. Exploring this notion, a self-belief survey was distributed to undergraduate software engineering students. It was revealed that beliefs about intelligence and programming aptitude formed two distinct constructs. Furthermore, the mindset for programming aptitude had greater utility in predicting software development practice and a follow-up survey showed that it became more fixed throughout instruction. Thus, educators should consider the role of programming-specific beliefs in the design and evaluation of introductory courses in software engineering. Particularly, the need to situate and contextualize the growth messages that motivate students who experience early setbacks.
Governments around the globe are striving to provide e-government, online products and services to all the citizens of their respective countries. This has meant that there is a shift in the conventional mode of public service delivery from a face-to-face and telephone mode to electronic means. However, not all the citizens are making use of these changes and one demographic citizens group that is currently attracting immense interest related to their welfare, health and other such issues is the older people group. Using this as reasoning, the aim of this exploratory and explanatory research is to understand the e-government initiatives in the UK, more specifically London. To conduct this research, a mixed qualitative and quantitative research approach was pursued. It was concluded that the benefits of the Internet to many of the users is relative, depending on the age, perceptions and level of innovativeness of the user. It was learnt that in relation to quality, the local authority websites do contain useful and relevant information for the elderly. However, this information is difficult to access, mainly due to the lack of knowledge, or skills in the use of computers, or Internet. From this research it is expected that a contribution to academia will emerge in the form of a better understanding of issues related to e-government, the digital divide and older citizens. For industry, the contributions of this research is the identification and understanding of issues related with online products and services and the older citizen. For policymakers, this research proffers an understanding of issues related with demand and supply of online products and services that governments are currently providing.
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