advligorts: The Advanced LIGO Real-Time Digital Control and Data Acquisition System

The Advanced LIGO detectors are sophisticated opto-mechanical devices. At the core of their operation is feedback control. The Advanced LIGO project developed a custom digital control and data acquisition system to handle the unique needs of this new breed of astronomical detector. The advligorts is the software component of this system. This highly modular and extensible system has enabled the unprecedented performance of the LIGO instruments, and has been a vital component in the direct detection of gravitational waves

Towards a Layered Architectural View for Security Analysis in SCADA Systems

Supervisory Control and Data Acquisition (SCADA) systems support and control the operation of many critical infrastructures that our society depend on, such as power grids. Since SCADA systems become a target for cyber attacks and the potential impact of a successful attack could lead to disastrous consequences in the physical world, ensuring the security of these systems is of vital importance. A fundamental prerequisite to securing a SCADA system is a clear understanding and a consistent view of its architecture. However, because of the complexity and scale of SCADA systems, this is challenging to acquire. In this paper, we propose a layered architectural view for SCADA systems, which aims at building a common ground among stakeholders and supporting the implementation of security analysis. In order to manage the complexity and scale, we define four interrelated architectural layers, and uses the concept of viewpoints to focus on a subset of the system. We indicate the applicability of our approach in the context of SCADA system security analysis.Comment: 7 pages, 4 figure

Family Supportive Supervision Around the Globe

Family-supportive supervision (FSS) refers to the degree to which employees perceive their immediate supervisors as exhibiting attitudes and behaviors that are supportive of their family role demands (Hammer, Kossek, Zimmerman, & Daniels, 2007; Kossek, Pichler, Bodner & Hammer, 2011: Thomas & Ganster, 1995). A growing body of research suggests that leaders\u27 and supervisors\u27 social support of employees\u27 needs to jointly carry out work and family demands is important for general health and job attitudes, such as satisfaction, work-family conflict, commitment, and intention to turn over (Hammer, Kossek, Anger, Bodner, & Zimmerman, 2009; Kossek et al., 2011). Thus, employee perceptions of FSS are critical to individual well-being and productivity (Hammer, Kossek, Yragui, Bodner, & Hansen, 2009). [excerpt

A peer-driven community-based supervisory model: development from an evaluation of an ethics workshop for doctoral students undertaking research with children

Differing doctoral supervision models currently exist. Three key conceptual supervisory models relevant to doctoral students from within the healthcare professions were identified from a literature review: the ‘functional pre-modern’ model, the ‘team’ model and the ‘community group’ model. However, whilst these models exist, for the most part, supervision remains embedded within home academic institutions. Method and material: (1) An extensive review of the literature was undertaken, drawing on: Australian Education Index, British Education Index, the British Humanities Index, the British Nursing Index, EBSCOHOST EJS and Google™ Scholar; (2) an outcome-oriented evaluation of a workshop delivered to seven current or prospective doctoral candidates from within the health care professions and researching with children and/or young people, concerning the conduct of ethical research was undertaken Results: Five key categories related to ‘best things about the day’ were identified from a four-item, anonymous questionnaire appraising the day. These concerned: round table discussions, plenary seminars, workshop organisation, value of experiential learning and future workshop opportunities. From these themes an ‘innovative’ peer-driven, community based model of doctoral supervision was developed that is extrinsic to and complements the supervision provided in students’ home academic institutions. Conclusions: The innovative supervisory model developed through an outcome-oriented evaluation of a workshop for doctoral candidates has particular relevance for doctoral students who are healthcare professionals generally and nurses in particular, especially those studying in highly specialised areas where there may be a dearth of subject specific supervisors

Using supervision: Support or surveillance?

This is the author's pdf version of an book chapter published by SAGE© 2007.This chapter will analyse supervision of staff in relation to developmental and managerial functions; argue that pressures on social services organisations have ensured that the need for agency accountability far outweighs its developmental function; suggest that the need for professional supervision is greatly enhanced given the development of inter-professional working arrangements; and propose that approaches to supervision can be applied to social work that have first been developed in the health service

Legitimacy and Expertise in Global Internet Governance

Over the course of the past decade or so, attention among Internet policymakers and scholars has shifted gradually from substantive design principles to the structure of Internet governance. The Internet Corporation for Assigning Names and Numbers in particular now faces a new skepticism about its legitimacy to administer the essential Internet Assigned Numbers Authority function. ICANN has responded to these doubts by proposing a series of major governance reforms that would bring nation-states more into the organization\u27s decisionmaking. After all, transnational governance institutions in other substantive areas privilege nation-states as a matter of course. This Symposium Essay shows that these changes reflect a new era in which ICANN and other Internet policymakers no longer view the Internet as uniquely immune from the geopolitics of the physical world