602 resultados para network support


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Whistleblowing has often been regarded as an intrusion into the commercial functioning of organisations, and whistle-blowers have frequently found their career prospects to go into steep decline. Recent evidence, however, suggests that individuals in organisations are increasingly being encouraged to report wrongdoings, with whistle-blowing being highlighted as an effective method of reducing the costs of fraudulent activities. This single organisation case study finds that many employees are still reluctant to report wrongdoings in their workplace. This is particularly the case in respect of male employees. It is also found that those employees who do whistle-blow are motivated by feelings of loyalty towards their organisation, rather than by self-interest.

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This paper presents an overview of technical solutions for regional area precise GNSS positioning services such as in Queensland. The research focuses on the technical and business issues that currently constrain GPS-based local area Real Time Kinematic (RTK) precise positioning services so as to operate in future across larger regional areas, and therefore support services in agriculture, mining, utilities, surveying, construction, and others. The paper first outlines an overall technical framework that has been proposed to transition the current RTK services to future larger scale coverage. The framework enables mixed use of different reference GNSS receiver types, dual- or triple-frequency, single or multiple systems, to provide RTK correction services to users equipped with any type of GNSS receivers. Next, data processing algorithms appropriate for triple-frequency GNSS signals are reviewed and some key performance benefits of using triple carrier signals for reliable RTK positioning over long distances are demonstrated. A server-based RTK software platform is being developed to allow for user positioning computations at server nodes instead of on the user's device. An optimal deployment scheme for reference stations across a larger-scale network has been suggested, given restrictions such as inter-station distances, candidates for reference locations, and operational modes. For instance, inter-station distances between triple-frequency receivers can be extended to 150km, which doubles the distance between dual-frequency receivers in the existing RTK network designs.

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Interactional research on advice giving has described advice as normative and asymmetric. In this paper we examine how these dimensions of advice are softened by counselors on a helpline for children and young people through the use of questions. Through what we term ‘‘adviceimplicative interrogatives,’’ counselors ask clients about the relevance or applicability of a possible future course of action. The allusion to this possible action by the counselor identifies it as normatively relevant, and displays the counselor’s epistemic authority in relation to dealing with a client’s problems. However, the interrogative format mitigates the normative and asymmetric dimensions typical of advice sequences by orienting to the client’s epistemic authority in relation to their own lives, and delivering advice in a way that is contingent upon the client’s accounts of their experiences, capacities, and understandings. The demonstration of the use of questions in advice sequences offers an interactional specification of the ‘‘client-centered’’ support that is characteristic of prevailing counseling practice. More specifically, it shows how the values of empowerment and child-centered practice, which underpin services such as Kids Helpline, are embodied in specific interactional devices. Detailed descriptions of this interactional practice offer fresh insights into the use of interrogatives in counseling contexts, and provide practitioners with new ways of thinking about, and discussing, their current practices.

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Islanded operation, protection, reclosing and arc extinguishing are some of the challenging issues related to the connection of converter interfaced distributed generators (DGs) into a distribution network. The isolation of upstream faults in grid connected mode and fault detection in islanded mode using overcurrent devices are difficult. In the event of an arc fault, all DGs must be disconnected in order to extinguish the arc. Otherwise, they will continue to feed the fault, thus sustaining the arc. However, the system reliability can be increased by maximising the DG connectivity to the system: therefore, the system protection scheme must ensure that only the faulted segment is removed from the feeder. This is true even in the case of a radial feeder as the DG can be connected at various points along the feeder. In this paper, a new relay scheme is proposed which, along with a novel current control strategy for converter interfaced DGs, can isolate permanent and temporary arc faults. The proposed protection and control scheme can even coordinate with reclosers. The results are validated through PSCAD/EMTDC simulation and MATLAB calculations.

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