Walking the Tightrope: Using Power and Authority in Child Welfare Supervision

Recognizing the importance of understanding the way in which supervisors in child welfare perceive their administrative responsibilities and use of power and authority, an exploratory study was conducted. Supervisors in child welfare agencies in urban and rural settings participated in focus groups and discussed the impact of macro and micro factors on their performance. Policy changes, including using new approaches to child welfare, and organizational culture had a major affect on the way they offered supervision. At the micro level, their use of power was related to elements in their relationships with frontline workers and their own professional development. Implications for child welfare practice and for new and experienced supervisors are presented.

Power and the Construction of Independence in ICTD Organizations

How do powerful vested interests continue to influence ICT for development (ICTD) projects? In this paper, instead of adopting a macro-level analysis, I take an in-depth, ethnographic approach to focus on work practices at one NGO involved in producing information and communication technologies for use in developing countries. Staff decisions at this NGO were influenced by particular powerful organizations, and I draw on theoretical insights from organization studies in order to understand this. The approach yields surprising results. Staff members appeared able to "stand back" from the pressures coming from donors and other influential parties, and to critically reflect upon these. Paradoxically, rather than fueling resistance, this sense of independence appeared to reinforce dependency on these powerful organizations. Moreover, the fact that this NGO was engaged in ICTD work further heightened these effects. This study extends existing understandings of how power operates within ICTD organizations, by highlighting the ways in which a sense of independence can paradoxically exacerbate donor influence over work activities.

Work-worlds colliding: Self-reflexivity, power and emotion in organizational ethnography

While organizational ethnographers have embraced the concept of self-reflexivity, problems remain. In this article we argue that the prevalent assumption that self-reflexivity is the sole responsibility of the individual researcher limits its scope for understanding organizations. To address this, we propose an innovative method of collective reflection that is inspired by ideas from cultural and feminist anthropology. The value of this method is illustrated through an analysis of two ethnographic case studies, involving a ‘pair interview’ method. This collective approach surfaced self-reflexive accounts, in which aspects of the research encounter that still tend to be downplayed within organizational ethnographies, including emotion, intersubjectivity and the operation of power dynamics, were allowed to emerge. The approach also facilitated a second contribution through the conceptualization of organizational ethnography as a unique endeavour that represents a collision between one ‘world of work’: the university, with a second: the researched organization. We find that this ‘collision’ exacerbates the emotionality of ethnographic research, highlighting the refusal of ‘researched’ organizations to be domesticated by the specific norms of academia. Our article concludes by drawing out implications for the practice of self-reflexivity within organizational ethnography.

Uniformity and diversity in religious education in Northern Ireland

This paper considers the tension that can exist in the aims of religious education between the desire to encourage open-minded, critical thinking through exposure to diverse traditions, ideas and cultures and the encouragement, overt or otherwise, into uniformity whereby learners take on the values of a particular tradition, culture or ideology (say of a religion, family or school). The particular situation of teaching religious education to post-primary school pupils in Northern Ireland is considered, and evidence cited to suggest that the Northern Ireland Core Syllabus in Religious Education has tried to impose a particular non-denominational Christian uniformity on pupils and teachers through its use of religious language. This has contributed to a culture of 'avoidance' in relation to the teaching of broad Christian diversity. The article concludes that there is a need for an ongoing and meaningful dialogue to discover what kind of balance between uniformity and diversity is best in teaching religious education in Northern Ireland, and notes that this also requires the reassessment of fundamental issues such as the aims of education and the relationship between secular and religious values in publicly funded schools. © 2004 Christian Education.

Massive MIMO with Optimal Power and Training Duration Allocation

We consider the uplink of massive multicell multiple-input multiple-output systems, where the base stations (BSs), equipped with massive arrays, serve simultaneously several terminals in the same frequency band. We assume that the BS estimates the channel from uplink training, and then uses the maximum ratio combining technique to detect the signals transmitted from all terminals in its own cell. We propose an optimal resource allocation scheme which jointly selects the training duration, training signal power, and data signal power in order to maximize the sum spectral efficiency, for a given total energy budget spent in a coherence interval. Numerical results verify the benefits of the optimal resource allocation scheme. Furthermore, we show that more training signal power should be used at low signal-to-noise ratio (SNRs), and vice versa at high SNRs. Interestingly, for the entire SNR regime, the optimal training duration is equal to the number of terminals.

Design methodology for low power and arametric robustness through output-quality modulation:Application to color-interpolation filtering

Power dissipation and robustness to process variation have conflicting design requirements. Scaling of voltage is associated with larger variations, while Vdd upscaling or transistor upsizing for parametric-delay variation tolerance can be detrimental for power dissipation. However, for a class of signal-processing systems, effective tradeoff can be achieved between Vdd scaling, variation tolerance, and output quality. In this paper, we develop a novel low-power variation-tolerant algorithm/architecture for color interpolation that allows a graceful degradation in the peak-signal-to-noise ratio (PSNR) under aggressive voltage scaling as well as extreme process variations. This feature is achieved by exploiting the fact that all computations used in interpolating the pixel values do not equally contribute to PSNR improvement. In the presence of Vdd scaling and process variations, the architecture ensures that only the less important computations are affected by delay failures. We also propose a different sliding-window size than the conventional one to improve interpolation performance by a factor of two with negligible overhead. Simulation results show that, even at a scaled voltage of 77% of nominal value, our design provides reasonable image PSNR with 40% power savings. © 2006 IEEE.