University of Portsmouth

About: University of Portsmouth is a education organization based out in Portsmouth, Portsmouth, United Kingdom. It is known for research contribution in the topics: Population & Galaxy. The organization has 5452 authors who have published 14256 publications receiving 424346 citations. The organization is also known as: Portsmouth and Gosport School of Science and Art & Portsmouth and Gosport School of Science and the Arts.

Expert: a discussion of the implications of the concept as used in nursing

Abstract: The concept 'expert' has become common in the nursing literature since Benner's (1984) work more than a decade ago. Whilst the term has a common meaning, it is apparent that when used in nursing it refers to a multitude of attributes and lacks clear definition. This paper uses the strategy for concept analysis developed by Walker & Avant (1988) to seek an operational definition for the concept of 'expert', and suggests the defining attributes of: possession of a specialized body of knowledge and skill; extensive experience in a field of practice; highly developed levels of pattern recognition, and acknowledgement by others. These are discussed in relation to nursing practice and the circumstances under which the concept is used. Development of cases is carried out to exemplify the concept, and the antecedents and consequences of the attributes are discussed, suggesting that the concept lacks clarity, both in conceptualization, and in use. A first definition of the concept is posed to open debate concerning the relevance of the term for the future. The conclusions reached suggest that whilst an operational definition is unlikely to be found, because of the problems of definition and measurement, it is possible, through various strategies, to recognize expert practice and use it to further develop nursing. Furthermore, it is likely to become increasingly important to recognize and reward expert practitioners, given the political and economic constraints in health care today.

Intelligent human computer interaction based on non redundant EMG signal

Abstract: Human computer interaction plays an increasingly important role in our life. People need more intelligent, concise and efficient human-computer interaction. It is of great significance to optimize the process of human-computer interaction by using appropriate calculation methods. In order to eliminate the interference data of thumb recognition based on sEMG signal in the process of human-computer interaction, simplify the data processing, and improve the working efficiency of general equipment of sEMG signal. In the process of gesture recognition using sEMG signals generated by thumb, a method of redundant electrode determination based on variance theory is proposed. The redundancy of five groups of action signals is divided into 16 levels and visualized. By comparing the results of thumb motion recognition when different redundant channels are removed, the optimal channel combination in the process of thumb motion recognition is obtained. Finally, two kinds of classifiers suitable for sEMG signal field are selected, and the classification results are compared, and the best method of thumb motion pattern recognition is obtained.

Sociology and the body: classical traditions and new agendas

Abstract: Reflecting developments in consumer culture, the politics of social movements, public health policy, and medical technologies, the body has since the early 1980s become one of the most popular and ...

Minimum mass–radius ratio for charged gravitational objects

Abstract: We rigorously prove that for compact charged general relativistic objects there is a lower bound for the mass–radius ratio. This result follows from the same Buchdahl type inequality for charged objects, which has been extensively used for the proof of the existence of an upper bound for the mass–radius ratio. The effect of the vacuum energy (a cosmological constant) on the minimum mass is also taken into account. Several bounds on the total charge, mass and the vacuum energy for compact charged objects are obtained from the study of the Ricci scalar invariants. The total energy (including the gravitational one) and the stability of the objects with minimum mass–radius ratio is also considered, leading to a representation of the mass and radius of the charged objects with minimum mass–radius ratio in terms of the charge and vacuum energy only.

Multi-objective software effort estimation

Abstract: We introduce a bi-objective effort estimation algorithm that combines Confidence Interval Analysis and assessment of Mean Absolute Error. We evaluate our proposed algorithm on three different alternative formulations, baseline comparators and current state-of-the-art effort estimators applied to five real-world datasets from the PROMISE repository, involving 724 different software projects in total. The results reveal that our algorithm outperforms the baseline, state-of-the-art and all three alternative formulations, statistically significantly (p Â12 ≥ 0.9) over all five datasets. We also provide evidence that our algorithm creates a new state-of-the-art, which lies within currently claimed industrial human-expert-based thresholds, thereby demonstrating that our findings have actionable conclusions for practicing software engineers.