From blogging Central Asia to citizen media : a practitioners’ perspective on the evolution of the neweurasia blog project

This essay examines the development of one regional blogosphere, the Central Asian ‘Stanosphere’, through a focus on the neweurasia blog project. The neweurasia project began in 2005 as an Englishlanguage volunteer-run blog project about the former Soviet republics of Central Asia and the Caucasus, rapidly becoming one of the most visited blogs about the region. Following this auspicious start, over the next five years neweurasia developed into a multi-language locally driven project with more than 80,000 unique page views on average per month. Despite its indisputable successes, the project was often a steep learning curve for all involved. In this essay, we examine neweurasia’s evolution from ‘blogging Central Asia’ towards a citizen media project, and reflect on some of the issues and challenges encountered. On the basis of our discussion, we reflect upon how neweurasia, and citizen media in general, can maximise its impact on the nascent Stanosphere, in the process helping to give Central Asia a voice in the global blogosphere.

A multilevel social network perspective on IT adoption

Adoption of technologies has long been a key area of research in the information systems (IS) discipline, and researchers have thus been interested in the attributes, beliefs, intentions, and behaviors of individuals and organisations that could explain information and communication technology (ICT) adoption. The focal unit of adoption has mainly been individuals and organisations, however, research at group or social network level as well as the inter-organizational level have recently gained increased interest from IS researchers. This recent focus supports the view of the world as being the sum of all relations. Various social network theories exist that seek to emphasize different proficiencies of social networks and explain theoretical mechanisms for behavior in social networks. The core idea of these theories is that social networks are valuable, and the relations among actors affect the behavior of individuals, groups, organizations, industries, and societies. IS researchers have also found that social network theory can help explain technology adoption. Some researchers, in addition, acknowledge that most adoption situations involve phenomena occuring at multiple levels, yet most technology adoption research applies a single level of analysis. Multilevel research can address the levels of theory, measurement, and analysis required to fully examining research questions. This paper therfore adapts the Coleman diagram into the Multi-level Framework of Technology. Adoption in order to explain how social network theory, at the individual and social network level, can help explain adoption of ICT. As Coleman (1990) attempts to create a link between the micro and macro level in a holistic manner, his approach is applicable in explaining ICT adoption

Evolutionary optimization: a big data perspective

Stochastic search techniques such as evolutionary algorithms (EA) are known to be better explorer of search space as compared to conventional techniques including deterministic methods. However, in the era of big data like most other search methods and learning algorithms, suitability of evolutionary algorithms is naturally questioned. Big data pose new computational challenges including very high dimensionality and sparseness of data. Evolutionary algorithms' superior exploration skills should make them promising candidates for handling optimization problems involving big data. High dimensional problems introduce added complexity to the search space. However, EAs need to be enhanced to ensure that majority of the potential winner solutions gets the chance to survive and mature. In this paper we present an evolutionary algorithm with enhanced ability to deal with the problems of high dimensionality and sparseness of data. In addition to an informed exploration of the solution space, this technique balances exploration and exploitation using a hierarchical multi-population approach. The proposed model uses informed genetic operators to introduce diversity by expanding the scope of search process at the expense of redundant less promising members of the population. Next phase of the algorithm attempts to deal with the problem of high dimensionality by ensuring broader and more exhaustive search and preventing premature death of potential solutions. To achieve this, in addition to the above exploration controlling mechanism, a multi-tier hierarchical architecture is employed, where, in separate layers, the less fit isolated individuals evolve in dynamic sub-populations that coexist alongside the original or main population. Evaluation of the proposed technique on well known benchmark problems ascertains its superior performance. The algorithm has also been successfully applied to a real world problem of financial portfolio management. Although the proposed method cannot be considered big data-ready, it is certainly a move in the right direction.

Explaining the environmentally sustainable consumer behavior: a social capital perspective

Purpose - The purpose of this study is to examine the effects of social capital within a community on the adoption of consumer eco-behaviour or environmentally sustainable behaviour of consumers. The authors draw on the behavioural perspective model (BPM) of consumer behaviour and social capital theory in arguing that social capital shapes a consumer's knowledge of environmental issues and pro-environmental attitudes, which in turn influence a consumer's perceived capability to engage in eco-behaviour. Design/methodology/approach - This study uses partial least squares approach to structural equation modelling of survey data involving 1,044 consumers in the Philippines. It involves testing of a measurement model to examine the validity and reliability of the constructs used in the study. This is followed by testing of the structural models to test the hypothesised relationships of the constructs. Findings - The results suggest the substantive influence of social capital on environmental knowledge, pro-environmental attitudes and eco-capability. Both knowledge and attitudes have positive effects on eco-capability, which in turn positively shapes eco-behaviour. Research limitations/implications - Future studies can examine how social capital as a multi-dimensional construct impacts context-specific consumer behaviour. Practical implications - Social and environmental marketing may focus on social network activation to encourage eco-behaviours of consumers. Social implications - Findings highlight the role of social capital within one's community as a resource channel to encourage environmentally responsible consumer behaviour. Originality/value - The study extends the BPM by offering a social capital view as a more nuanced explanation of consumer eco-behaviour.

Perspectives of clinical handover processes: a multi-site survey across different health professionals

AIMS AND OBJECTIVES: To examine the perspectives of health professionals of different disciplines about clinical handover. BACKGROUND: Ineffective handovers can cause major problems relating to the lack of delivery of appropriate care. DESIGN: A prospective, cross-sectional design was conducted using a survey about clinical handover practices. METHODS: Health professionals employed in public metropolitan hospitals, public rural hospitals and community health centres were involved. The sample comprised doctors, nurses and allied health professionals, including physiotherapists, social workers, pharmacists, dieticians and midwives employed in Western Australia, New South Wales, South Australia and the Australian Capital Territory. The survey sought information about health professionals' experiences about clinical handover; their perceived effectiveness of clinical handover; involvement of patients and family members; health professionals' ability to confirm understanding and to clarify clinical information; role modelling behaviour of health professionals; training needs; adverse events encountered and possibilities for improvements. RESULTS: In all, 707 health professionals participated (response rate = 14%). Represented professions were nursing (60%), medicine (22%) and allied health (18%). Many health professionals reported being aware of adverse events where they noticed poor handover was a significant cause. Differences existed between health professions in terms of how effectively they gave handover, perceived effectiveness of bedside handover vs. nonbedside handover, patient and family involvement in handover, respondents' confirmation of understanding handover from their perspective, their observation of senior health professionals giving feedback to junior health professionals, awareness of adverse events and severity of adverse events relating to poor handovers. CONCLUSIONS: Complex barriers impeded the conduct of effective handovers, including insufficient opportunities for training, lack of role modelling, and lack of confidence and understanding about handover processes. RELEVANCE TO CLINICAL PRACTICE: Greater focus should be placed on creating opportunities for senior health professionals to act as role models. Sophisticated approaches should be implemented in training and education.

Using multi-core processors to support network security applications

Multi-core processors represent a major evolution in computing hardware technology. Multi-core provides a network security application with more processing power from the hardware perspective. However, there are still significant software design challenges that must be overcome. In this paper, we present new architecture for multi-core supported network security applications, which aims at providing network security processing without causing performance penalty to normal network operations. We also provide an instance of this architecture - a multi-core supported intrusion detection system based on neural network. While hardware-based parallelisms have shown their advantage on throughput performance, parallelisms based multi-core provides more flexible, high performance, comprehensive, intelligent, and scalable solutions to network security applications. © 2008 IEEE.

The diagnosis of attention-deficit/hyperactivity disorder in Australian children: current paediatric practice and parent perspective

Aims In a sample of newly diagnosed children with attention-deficit/hyperactivity disorder (ADHD), the aims were to examine (1) paediatrician assessment and management practices; (2) previous assessments and interventions; (3) correspondence between parent-report and paediatrician identification of comorbidities; and (4) parent agreement with diagnosis of ADHD. Methods Design: cross-sectional, multi-site practice audit with questionnaires completed by paediatricians and parents at the point of ADHD diagnosis. Setting: private/public paediatric practices in Western Australia and Victoria, Australia. Main outcome measures: paediatricians: elements of assessment and management were indicated on a study-designed data form. Parents: ADHD symptoms and comorbidities were measured using the Conners 3 ADHD Index and Strengths and Difficulties Questionnaire, respectively. Sleep problems, previous assessments and interventions, and agreement with ADHD diagnosis were measured by questionnaire. Results Twenty-four paediatricians participated, providing data on 137 patients (77% men, mean age 8.1 years). Parent and teacher questionnaires were used in 88% and 85% of assessments, respectively. Medication was prescribed in 75% of cases. Comorbidities were commonly diagnosed (70%); however, the proportion of patients identified by paediatricians with internalising problems (18%), externalising problems (15%) and sleep problems (4%) was less than by parent report (51%, 66% and 39%). One in seven parents did not agree with the diagnosis of ADHD. Conclusions Australian paediatric practice in relation to ADHD assessment is generally consistent with best practice guidelines; however, improvements are needed in relation to the routine use of questionnaires and the identification of comorbidities. A proportion of parents do not agree with the diagnosis of ADHD made by their paediatrician.