35 resultados para Service-Based Architecture
Resumo:
In future massively distributed service-based computational systems, resources will span many locations, organisations and platforms. In such systems, the ability to allocate resources in a desired configuration, in a scalable and robust manner, will be essential.We build upon a previous evolutionary market-based approach to achieving resource allocation in decentralised systems, by considering heterogeneous providers. In such scenarios, providers may be said to value their resources differently. We demonstrate how, given such valuations, the outcome allocation may be predicted. Furthermore, we describe how the approach may be used to achieve a stable, uneven load-balance of our choosing. We analyse the system's expected behaviour, and validate our predictions in simulation. Our approach is fully decentralised; no part of the system is weaker than any other. No cooperation between nodes is assumed; only self-interest is relied upon. A particular desired allocation is achieved transparently to users, as no modification to the buyers is required.
Resumo:
This study examines the cultural value orientations (VOs) of employees (managerial and non-managerial) working in three categories of organizations (professional, technical and local services) in India, Poland, Russia and the USA. The analysis is conducted at both the national and organizational levels. The paper hypothesizes cultural differences at the country level and cultural similarities among employees working for professional and technical oriented organizations and divergence in the VOs of employees working for local services organizations. It also hypothesizes differences in the VOs of managerial and non-managerial employees in the four countries. The investigation has been conducted with the help of a questionnaire survey of 1,852 respondents. The outcomes of the analysis show that there are both cross-country cultural differences and similarities among the VOs of employees of the four nations. Further, significant cultural convergence emerges in the VOs of employees working for both professional and technical organizations, however, no significant cultural similarities or differences are observed for employees of service-based organizations in the four countries. There are some similarities emerging between managerial employees in the research countries. The research contributes to the fields of cross-cultural management, international management and international human resource management.
Resumo:
This paper seeks to theorise the role that gender plays in the careers of junior female managers. We do this by drawing upon two separate empirical studies, firstly a largescale study based on interviews with female managers in the West Midlands (UK) is used to explore the growth of female participation in junior managerial roles with reference to the notion of managerial careers as seduction. We explore the routes the women have taken into junior management careers and the barriers that exist to progression toward more senior roles. Secondly, a small-scale ethnographic study of a large service-based organization, also based in the West Midlands, is documented in an attempt to theorise the organizational role of female junior managers. While the dominance of masculine values and practices in organisations is explored, we also argue that growing female participation at junior managerial levels can only partly be explained by female managers adopting, or appearing to adopt, masculine behaviours. We seek to contribute to a fuller explanation by drawing attention to the way in which senior managers in the case study sought to employ female junior managers particularly for their perceived feminine skills. Significantly, however the ethnography reveals the ambiguously gendered construction of female junior managers roles through an exploration of the enactment of both masculine and feminine practices during the ‘doing’ of management.
Resumo:
Despite having been described by the then (2003) Chief Pharmaceutical Officer for England as ·probably the biggest untapped resource for health improvement", the development of the public health function of community pharmacists has been limited. However, devolution of healthcare budgets has led 10 differential rates of development of the public health function in each administration of the UK (England, Scotland, Wales and Northern Ireland). This is measured and reflected upon in this thesis. Two large-scale surveys were conducted, one of key strategic personnel (Directors of Public Health and Chief Pharmacists) in Primary Care Organisations (PCOs) and one of practicing community pharmacists. This research highlights the fact that community pharmacists have developed an individualistic, service-based approach to their engagement with public health that is contrary to the more collective approach adopted by the wider public health movement. The study measures the scope and level of health-improving services through community pharmacy across the UK and shows that the nature of the pharmacy contractor (independent, multiple etc.) may impact on the range and nature of services provided. Survey data also suggest that attitudes towards pharmacy involvement in the public health agenda vary markedly between Directors of Public Health, PCO Chief Pharmacists, and community pharmacists. Furthermore, within the community pharmacist population, attitudes are affected by a wide range of factors including the nature of employment (owner, employee, self-employed) and the type of employing pharmacy (independent, multiple etc.). Implications for policy and areas for further research aimed at maximising the public health function of community pharmacists are suggested.
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This paper focuses on the structuring of work and organization by exploring the hierarchical and gendered nature of the division of labour within a contemporary service-based organization. Central to our account is the role of the ‘team leader’, which we argue, as a junior management position, occupies a key role in understanding and accounting for the gendered hierarchical terrain of the organization. In exploring the role of team leaders, a position that empirically, tends overwhelming to be held by female members of staff, we draw attention to the perception of the gendered nature of the role by subordinate members of the organization, team-leaders themselves, and more senior members of staff. The specific constitution and character of the team leader position is brought into sharp relief through comparison with the subordinate role of ‘problem manager’, a position which was overwhelming held by men. Our ethnographic approach attempts to draw attention to that which is both ‘said’ and ‘done’ within the organizational context and the account of junior managers that emerges is highly gendered. The paper seeks to map this account onto the existing and on-going debate within Gender and Organizational research, which explores, documents and challenges Masculinities at work.
Resumo:
Despite expectations being high, the industrial take-up of Semantic Web technologies in developing services and applications has been slower than expected. One of the main reasons is that many legacy systems have been developed without considering the potential of theWeb in integrating services and sharing resources.Without a systematic methodology and proper tool support, the migration from legacy systems to SemanticWeb Service-based systems can be a tedious and expensive process, which carries a significant risk of failure. There is an urgent need to provide strategies, allowing the migration of legacy systems to Semantic Web Services platforms, and also tools to support such strategies. In this paper we propose a methodology and its tool support for transitioning these applications to Semantic Web Services, which allow users to migrate their applications to Semantic Web Services platforms automatically or semi-automatically. The transition of the GATE system is used as a case study. © 2009 - IOS Press and the authors. All rights reserved.
Resumo:
The World Wide Web provides plentiful contents for Web-based learning, but its hyperlink-based architecture connects Web resources for browsing freely rather than for effective learning. To support effective learning, an e-learning system should be able to discover and make use of the semantic communities and the emerging semantic relations in a dynamic complex network of learning resources. Previous graph-based community discovery approaches are limited in ability to discover semantic communities. This paper first suggests the Semantic Link Network (SLN), a loosely coupled semantic data model that can semantically link resources and derive out implicit semantic links according to a set of relational reasoning rules. By studying the intrinsic relationship between semantic communities and the semantic space of SLN, approaches to discovering reasoning-constraint, rule-constraint, and classification-constraint semantic communities are proposed. Further, the approaches, principles, and strategies for discovering emerging semantics in dynamic SLNs are studied. The basic laws of the semantic link network motion are revealed for the first time. An e-learning environment incorporating the proposed approaches, principles, and strategies to support effective discovery and learning is suggested.
Resumo:
Servitization concerns the process of manufacturers shifting from a focus on producing and selling tangible goods to service-based business models. Factors that drive adoption of servitization are financial, strategic (competitive advantage) and marketing. However, uptake is slow and active efforts are being made to transfer knowledge about servitization to the manufacturing sector. This paper presents early results from the first test of a serious computer game which has the goal of educating managers about what advanced services are and how they fit in supply chains. Results suggest the role-play scenario tested is appropriate for an audience of largely non-expert gamers, and that the approach has the potential to instruct users about the role of services in the supply chain.
Resumo:
Introduction: The focus of the community pharmacist’s (CP’s) activities continues to move away from traditional dispensing activities towards the provision of health services. Current functions of CPs cover a combination of roles including prescription matters, counselling and service provision. These expanding roles, along with raised prescription volume, have increased CP workload. Therefore, it has become commonplace to delegate certain activities to other pharmacy staff (PS). This research aimed to examine public perceptions of CPs and other PS functions. Methodology: A self-completion postal questionnaire was sent to a random sample of 9769 members of the general public in England. Participants were asked to indicate which functions they believed CPs and other PS perform. Data were imported into SPSS 22 for analysis. Results: A response rate of 15.7% (n = 1537) was achieved. The roles most commonly attributed to CPs were monitoring prescription appropriateness (90.4%, n = 1390) and counselling patients on prescribed medicines (90.4%, n = 1389). The role most commonly attributed to other PS was sales transactions (92.4%, n = 1420). Similar numbers of responders agreed that the delivery of health services was the role of both CPs and other PS (58.9%, n = 906; 57.0%, n = 876). Conclusion: Despite a move towards more service based practice, the public still primarily associate the CP’s role with activities centred on dispensing. The provision of health services was seen to be equally carried out by CPs and other PS. As the CP’s service-based activities continue to develop, promotional activities may be required to ensure developments in CP functions are recognised by the public
Resumo:
People and their performance are key to an organization's effectiveness. This review describes an evidence-based framework of the links between some key organizational influences and staff performance, health and well-being. This preliminary framework integrates management and psychological approaches, with the aim of assisting future explanation, prediction and organizational change. Health care is taken as the focus of this review, as there are concerns internationally about health care effectiveness. The framework considers empirical evidence for links between the following organizational levels: 1. Context (organizational culture and inter-group relations; resources, including staffing; physical environment) 2. People management (HRM practices and strategies; job design, workload and teamwork; employee involvement and control over work; leadership and support) 3. Psychological consequences for employees (health and stress; satisfaction and commitment; knowledge, skills and motivation) 4. Employee behaviour (absenteeism and turnover; task and contextual performance; errors and near misses) 5. Organizational performance; patient care. This review contributes to an evidence base for policies and practices of people management and performance management. Its usefulness will depend on future empirical research, using appropriate research designs, sufficient study power and measures that are reliable and valid.
Resumo:
The majority of the literature about CBM is American in origin, and (inter alia) notes that there were differing uses of similar technology, indicating that context has an important role to play in the use of CBM. The literature maps the psychological effects of CBM in considerable detail, but only two published studies examine the context of CBM. These grounded results provide scant support for any systematic, quantitative, large scale analysis of computer based monitoring in the UK context. This thesis thus aims to systemically examine the context of CBM using discourse analysis. Forty four interviewees were theoretically sampled using a structured sample technique in four organizations. All were national or multinational enterprises. The interviews were semi structured in nature and divided into three sections. The first addressed the respondents' thoughts and perceptions about CBM, the second elicited talk about the departmental context (focusing the management - worker relationship), and the final section addressed the organizational context. The cases demonstrated variation in the use of CBM, measured according to the criteria of Westin (1987, 1988) and according to the interpretive repertoires used by the respondents in each case. Seven analytical categories of talk emerged from the data: three at the organizational level and four at the departmental level of analysis. Discourse analysis revealed two discrete interpretive repertories - the procedural and the substantive repertoires - in respondents' talk whose main variation occurred at the departmental level of analysis. Furthermore, patterns were found in the use of these repertories within cases and between categories. Between the cases, variation in the use of the repertories matched the between case variation according to the criteria of Westin. It would thus appear that the source of variation in the use of CBM lies in its context, more specifically in the relative emphasis of humanistic, interpersonal and idiosyncratic values within the management worker relationship.
Resumo:
Background: Team-based working is now an inherent part of effective health care delivery. Previous research has identified that team working is associated with positive mental health and well-being outcomes for individuals operating in an effective team environment. This is a particularly important topic in the health services context, although little empirical attention has been paid to mental-health services. Psychiatric nurses work on a day-to-day basis with a particularly stressful and demanding client group in an environment which is characterised by high demands, uncertainty, and limited resources. This paper specifically focuses on psychiatric nurses working in National Health Service (NHS) and casts some light on the ways in which effective team-based working can help to alleviate a number of occupational stressors and strains. Method: A questionnaire method (2005 NHS Staff Survey) was employed to collect data from 6655 psychiatric nurses from 64 different NHS Trusts. The hypotheses were concerned with four overall measures from the survey; effective team working, occupational stress, work pressure and social support. Hypothesis 1 stated that effective team working will have a significant negative relationship with occupational stress and work pressure. Further, Hypothesis 2 stated that social support from supervisors and co-workers will moderate this relationship. Findings: Data was treated with a series of regression analyses. For Hypothesis 1, working in a real team did have main effects on work pressure and accounted for 1.6 per cent of the variance. Using the Nagelkerke R square value, working in a real team also had main effects on occupational stress an accounted for approximately 2.8 per cent of the variance. Further, the Exp (B) value of 0.662 suggests that the odds of suffering from occupational stress are cut by 33.8 per cent when a psychiatric nurse works in a real team. Results failed to provide support for Hypothesis 2. The analysis then went on to adopt a unique approach for assessing the extent of real team-based working, distinguishing between real teams, and a number of pseudo team typologies, as well as the absence of teamwork all together. As was hypothesised, results demonstrated that psychiatric nurses working in real teams (ones with clear objectives, where-by team members work closely with one another to achieve team objectives and meet regularly to discuss team effectiveness and how it can be improved) experienced the lowest levels of stress and work pressure of the sample. However, contrary to prediction, results indicated that psychiatric nurses working in any type of pseudo team actually experienced significantly higher levels of stress and work pressure than those who did not report as working in a team at all. Discussion: These findings have serious implications for NHS Mental Health Trusts, which may not be implementing, structuring and managing their nursing teams adequately. Indeed, results suggest that poorly-structured team work may actually facilitate stress and pressure in the workplace. Conversely, well-structured real teams serve to reduce stress and work pressure, which in turn not only enhances the working lives and well-being of psychiatric nurses, but also greatly improves the service that the NHS provides to its users.
Resumo:
Modelling architectural information is particularly important because of the acknowledged crucial role of software architecture in raising the level of abstraction during development. In the MDE area, the level of abstraction of models has frequently been related to low-level design concepts. However, model-driven techniques can be further exploited to model software artefacts that take into account the architecture of the system and its changes according to variations of the environment. In this paper, we propose model-driven techniques and dynamic variability as concepts useful for modelling the dynamic fluctuation of the environment and its impact on the architecture. Using the mappings from the models to implementation, generative techniques allow the (semi) automatic generation of artefacts making the process more efficient and promoting software reuse. The automatic generation of configurations and reconfigurations from models provides the basis for safer execution. The architectural perspective offered by the models shift focus away from implementation details to the whole view of the system and its runtime change promoting high-level analysis. © 2009 Springer Berlin Heidelberg.
Resumo:
IEEE 802.16 network is widely viewed as a strong candidate solution for broadband wireless access systems. Various flexible mechanisms related to QoS provisioning have been specified for uplink traffic at the medium access control (MAC) layer in the standards. Among the mechanisms, bandwidth request scheme can be used to indicate and request bandwidth demands to the base station for different services. Due to the diverse QoS requirements of the applications, service differentiation (SD) is desirable for the bandwidth request scheme. In this paper, we propose several SD approaches. The approaches are based on the contention-based bandwidth request scheme and achieved by the means of assigning different channel access parameters and/or bandwidth allocation priorities to different services. Additionally, we propose effective analytical model to study the impacts of the SD approaches, which can be used for the configuration and optimization of the SD services. It is observed from simulations that the analytical model has high accuracy. Service can be efficiently differentiated with initial backoff window in terms of throughput and channel access delay. Moreover, the service differentiation can be improved if combined with the bandwidth allocation priority approach without adverse impacts on the overall system throughput.