Search results

The purpose of this paper is to present analysis of the feedback predictive encoder-based analog-to-digital converter (ADC).

The use of feedback predictive encoder-based ADCs presents an alternative to the traditional two-stage pipeline ADC by replacing the input estimate producing first stage of the pipeline with a predictive loop that also produces an estimate of the input signal.

The overload condition for feedback predictive encoder ADCs is dependent on input signal amplitude and frequency, system gain and filter order. The limitation on the practical usable filter order is set by limit cycle oscillation. A boundary condition is defined for determination of maximum usable filter order. In a practical implementation of the predictive encoder ADC, the time allocated to the key functions of the gain stage and loop quantizer leads to optimization of the power consumption.

A practical switched capacitor implementation of the predictive encoder-based ADC is proposed. The power consumption of key circuit blocks is investigated.

This paper presents a methodology to optimize the bandwidth of predictive encoder ADCs. The overload and stability conditions may be used to determine the maximum input signal bandwidth for a given loop quantizer. Optimization of power consumption based on the allocation of time between the gain stage and the successive approximation register ADC operation is investigated. The lower bound of power consumption for this architecture is estimated.

The purpose of this paper is to present a hierarchical circuit synthesis system with a hybrid deterministic local optimization – multi‐objective genetic algorithm (DLO‐MOGA) optimization scheme for system‐level synthesis.

The use of a local optimization with a deterministic algorithm based on linear equations which is computationally efficient and improves the feasibility of designs, allows reduction in the number of MOGA generations required to achieve convergence.

This approach reduces the total number of simulation iterations required for optimization. Reduction in run time enables use of full transistor‐level models for simulation of critical system‐level sub‐blocks. Consequently, for system‐level synthesis, simulation accuracy is maintained. The approach is demonstrated for the design of pipeline analog‐to‐digital converters on a 0.35 μm process.

The use of a hybrid DLO‐MOGA optimization approach is a new approach to improve hierarchical circuit synthesis time while preserving accuracy.

The purpose of this paper is to explore theoretical connections between educational leadership for social justice and support for immigration. The authors seek to identify strengths, weaknesses and opportunities for further study and improved practice.

This is a theoretical research paper that introduces, evaluates and expands two frameworks for understanding leadership and immigration.

Findings suggested that there is a need for educational leadership scholars to more purposefully investigate issues related to social justice and immigration.

This study offers a novel theoretical perspective on leadership, social justice and immigration.

Scholars typically view cross-legacy boundary spanners – employees who develop and maintain social relationships with coworkers from both legacy organizations – as the key integrators in mergers and acquisitions (M&As). Organizations even formally appoint employees with cross-legacy responsibilities to support the post-merger integration process. Recent research has started to emphasize, however, how difficult it can be to reap the benefits of a boundary-spanning position. Building and maintaining formal or informal boundary-spanning ties is costly because it requires time, attention, and political savviness. To better understand the perks and pitfalls of cross-legacy boundary-spanning, the authors identify and describe its structural and sociocultural dimensions and explain how they influence cross-legacy boundary-spanning in M&A contexts. The authors argue that the two dimensions can be seen as boundary conditions to the positive relationship between cross-legacy boundary spanning and post-merger integration. This chapter highlights the potential dark side of cross-legacy boundary-spanning and proposes a multi-dimensional model to explain how cross-legacy boundary spanners can avoid the pitfalls and promote the perks of their position in support of successful post-merger integration.

THE new library building has been open for six months now. It is pleasantly situated in an area of new buildings, and occupies a prominent island site just on the edge of the shopping centre. The old library was in the middle of a shopping area, and it has been interesting to note that our removal from that site has had a more considerable effect on the traffic pattern than one would have thought.

This study aims to articulate the conceptual foundations of the role of accounting infrastructure (calculative practice and the communicative dimension of accounting) in extractive industries (EIs) towards a sustainable orientation from an actor-network theory (ANT) perspective.

This study is a literature-based analysis of the calculative property and communicative dimension of accounting in EIs, using the concepts of calculability, assemblage and other related concepts from ANT to identify potentialities and limits of the roles of accounting in this sector.

While accounting infrastructure can influence social and environmental outcomes, it has not, as yet, led to ecologically and socially sustainable practices in EIs. Calculative properties and the communicative dimension of accounting infrastructure have capabilities to foster the phenomenon of “sustainability” in EIs by valuing, disclosing (reporting) and governing EIs towards a sustainable orientation. Conceptualizing sustainable EIs as a promissory economy, accounting infrastructure serves as a tool not only to represent past performance but also to enact the future: it helps to shape a sustainable future for the industry by informing and triggering behavioural decisions of EIs firms towards sustainable practices.

This conceptual paper is anticipated to stimulate future sustainability accounting research. The research agenda discussed in this paper can be used to enrich our understanding of the role of accounting in sustainability.

This paper charts a direction for future research by interpreting the role of sustainability accounting within networks of sociotechnical relations, using ANT concepts which attach importance to the dualism of nature and society. Conceptualizing sustainability accounting and reporting as an infrastructure, which draws more attention to the relationality characteristic of accounting, the study goes beyond the traditional interpretation of accounting as a mediation device and draws on a contemporary view of accounting by invoking the dynamic relation between accounting and society, in the context of EIs.

The purpose of this paper is to argue that historical research methods offer an innovative and powerful way to examine, frame, explain, and disrupt the study of contemporary issues in educational leadership. More specifically, the authors examine how historical methodology might recast some of the questions educational leadership researchers presently engage and how the act of “doing history” might simultaneously lead to new research agendas and social change.

This conceptual paper provides a discussion of the explanatory and disruptive power of historical research methods and how intentional ignorance of uncomfortable historical realities, such as racist institutional structures and practices, undermines present-day efforts to advance equity in schools. Using the mainstream achievement gap narrative as an example, the authors consider the ways in which historical scholarship can effectively disrupt current conceptions of educational inequality and opportunity in the USA.

The paper suggests researchers close the “history gap” by engaging historical research methods in ways that better ground, contextualize, and disrupt the often ahistorical and uncritical ways the field frames present-day challenges like the achievement gap.

This paper explores the explanatory and disruptive power of historical research as a mode of inquiry in education leadership.

Research on principal supervisors (PSs) is an emerging field, and principal supervision for racial equity has not yet been studied or theorized. Conducted in partnership with practicing district leaders, the purpose of this paper is to examine current PS leadership in three districts at various points of engagement in equitable leadership practices and set forth a framework for conceptualizing systems equitable leadership practice.

This collaborative study emerged from an EdD course project in which groups of practitioner–scholars identified and collected qualitative interview, survey and artifact data about problems of practice in their districts. University researchers supported data collection and conducted analyses across settings, building on Ishimaru and Galloway’s (2014) equitable leadership practices framework.

Equitable PS leadership practices were variable. No district engaged with “proficiency” across all drivers of equitable leadership practice, but the district that engaged in equitable PS practices most deeply framed the work of schooling as a race-explicit endeavor, suggesting that framing is a fundamental driver.

This paper builds on PS and equity-focused leadership research by adding a systems-level equity focus.

Findings suggest that districts should focus on equity framing as the foundation for principal support and development.

This researcher/practitioner–scholar collaboration shows how practitioner–scholars provide focus and expertise to the field unavailable to traditional researchers.