Towards communicating the value of volunteers: lessons from the field
Well-managed volunteers are assets that charities insist they cannot do without. Nevertheless, few charities publish the value of their volunteers' efforts in annual reports. Charities' current practices in communicating volunteers' value reflect the regulatory environment, but not their increasing professionalization. Valuing volunteers can assist charities in services planning and to build their reputation in their communities. However, charities' managers must also accept that judgement is required in negotiating the sensitive nature of defining volunteers' value.
Measuring performance in the third sector
Purpose – The purpose of this paper is to set the scene for this special issue by synthesising the vast array of literature on performance measurement to examine what constitutes performance measurement, and why it is important for the third sector. It also analyses key issues of performance measurement and introduces the papers that comprise this special issue of Qualitative Research in Accounting & Management. Design/methodology/approach – This paper takes the form of a literature review. The authors draw on extensive research on performance measurement from a diverse range of disciplines to identify and explore key definitions, opportunities and challenges with performance measurement in the third sector. Findings – Economic/financial efficiency approaches, programme theories, strategic and participatory approaches all present opportunities and challenges when measuring performance in the third sector. The papers in this special issue demonstrate the manner in which different organisations have dealt w...
Super-resolution of overlapped waves in time and frequency domain in a directional borehole radar measurement
The Multiple Signal Classification (MUSIC) algorithm is modified in order to resolve multiple waves and to estimate reflection points in 3-D space. This algorithm is suitable for directional borehole radar with a circular dipole array antenna. Making use of the spatial frequency difference of acquired array signals, the signals are decorrelated, and the 3-D MUSIC algorithm is applied. The time domain signals of the singlehole array-type borehole radar are used in order to form a measurement vector in the MUSIC algorithm. A computer simulation confirms that the proposed algorithm may estimate the directions of arrival (DOA) for three signals. Applying the proposed algorithm to field experiment data successfully estimates the DOA of a reflected wave from a fracture in rock.