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1 – 3 of 3Maleachi Bühringer, Jan Berchtold, Melanie Büchel, Claus Dold, Michael Bütikofer, Mevina Feuerstein, Wolfgang Fischer, Christian Bermes and Roland Siegwart
The purpose of this paper is to describe the design and prototype implementation of the “Cable Crawler”, a mobile teleoperated robot for the inspection of high‐voltage power lines…
Abstract
Purpose
The purpose of this paper is to describe the design and prototype implementation of the “Cable Crawler”, a mobile teleoperated robot for the inspection of high‐voltage power lines which rides on the topmost ground cable. By not being limited to just moving from mast to mast, it implements an innovative mechanism that allows for crossing a set of mast tops as well as smaller obstacles autonomously.
Design/methodology/approach
After a brief overview of the state‐of‐the‐art for this application, the basic concept of the robot is presented – which basically consists of a chassis and six motorized rubber‐coated rollers, two in a horizontal position to take the weight and four vertical ones. The four vertical rollers are pressed onto the wire by springs, which guarantees slip‐less propulsion in difficult situations. The detailed design of the most challenging components is presented, as well as the successful tests with the prototype.
Findings
The feasibility of the concept is proven with a prototype implementation and successful test results.
Practical implications
With a mass of 58 kg and only six drives, it consequently follows the industry's wish to have a robust, easy to maintain and rather cheap solution. Regarding the fields examined by the robot, the project concentrated on the detection of trees growing into proximity of the wires. Future work will mainly stress in further reducing the robot's mass and in facilitating its transport to the mast by the workers.
Originality/value
The presented prototype allows for moving on the topmost ground cable of high‐voltage power‐lines and to passively roll over mast tops and smaller obstacles. With these properties, it is able to inspect long distances of cables in an autonomous way and by using a relatively low‐cost and robust robot.
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This chapter will examine the rise and downfall of the Irish Green Party from a party of protest through their elevation as junior coalition partners in the national government…
Abstract
This chapter will examine the rise and downfall of the Irish Green Party from a party of protest through their elevation as junior coalition partners in the national government from 2007 until 2011. An ‘Event History Analysis’ (EHA) (Berry & Berry, 1990) through an ‘Issue History’ (Szasz, 1994) will be applied to the key events in this process, in order to illustrate the key motivations, moments, potential successes and enduring difficulties which emerged during this time. An Event History Analysis provides an explanation for ‘a qualitative change’ that occurs as a result of key events in an organisation's history (Berry & Berry, 1990). An Issue History requires a trans-disciplinary analysis of events using theories and methods from history, sociology, political science, sources from the state, the media, surveys and the social movements, in addition to theories of political economy and postmodernism, to analyse various interrelated facets of the salient ‘issue’ being studied (Szasz, 2004, 2008).
This paper seeks to suggest ways of understanding the relationships between records and documents.
Abstract
Purpose
This paper seeks to suggest ways of understanding the relationships between records and documents.
Design/methodology/approach
The paper reviews some of the statements made about records and documents in professional literature. It also offers some thoughts on the connections between records and documents in digital and pre‐digital environments and their intersections with other concepts such as “data”.
Findings
Although professionals have often seen records and documents as closely intertwined, this paper argues that the record and the document follow different logics. Documents are characterised by their format, records by their relation to activities, events or other temporal occurrents. Records need not be in documentary form, and can exist at multiple levels of aggregation. The notion that documents become records when they are “declared” is problematic. Capture and declaration do not determine record status, but if capture systems are robust they allow the power of the record to be harnessed to the fullest possible extent.
Originality/value
The paper seeks to explicate some basic concepts of the professional discipline.
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