Learning, Systems Concepts and Values in Evaluation: Proposal for an Exploratory Framework to Improve Coherence

The three core systems concepts – interrelationships, perspectives and boundaries – can be used for framing an impact evaluation (see Williams, this IDS Bulletin) . But their use also has implications for the type of learning that an impact evaluation is likely to generate. Moreover, they can help to make the value base of evaluations more explicit. This article first outlines a typology for learning and elaborates on the implications for evaluation and the use of systems concepts. Then a similar typology for values is presented, together with their likely correspondence with learning types. These three aspects are usually dealt with separately in evaluation assignments, although they should be viewed together, as they mutually influence each other or can be seen as complementary. To this end a conceptual framework is proposed which permits to explore and reflect on the connections between the three systems concepts with learning and values

Technical aspects of Envisat-ASAR geocoding capability at DLR

Based on experience with the geocoding systems for ERS-D-PAF (GEOS), the SIR-C/X-SAR (GEOS) and SRTM missions (GeMoS), geocoding functionality has been extended for Envisat ASAR data. The existing Envisat ASAR Geocoding System (EGEO) can handle all Level 1-b image products (IMS, APS, IMP, APP, IMM, APM, WSM and GM1). Complementary to geocoded products provided by ESA (IMG, APG) the geocoding procedure applied at the German Aerospace Center (DLR) makes use of a DEM to achieve higher geolocation accuracy. The resulting geocoded image is either defined as EEC (Enhanced Ellipsoid Corrected) or as ETC (Enhanced Terrain Corrected). These products mainly differ in the underlying DEM used for geocoding. The EEC utilizes GLOBE, while the ETC utilizes the “best” DEM available in the data base. This “best” DEM can be assembled from different DEM data sets (e.g. derived from SRTM, ERS, …). Further differences such as the interpolative (EEC) and rigorous (ETC) geocoding approach will also be outlined. Furthermore, an incidence angle mask can be generated. The necessary upgrades for geocoding ASAR stripline products (e.g. IMM, WSM) will be presented. Stripline products cover a large area along track, as they consist of concatenated stand-alone products (“slices”). Thus the updates of relevant parameters have to be taken into account

Subjective experiment dataset for joint development of hybrid video quality measurement algorithms

International audienceThe application area of an objective measurement algorithm for video quality is always limited by the scope of the video datasets that were used during its development and training. This is particularly true for measurements which rely solely on information available at the decoder side, for example hybrid models that analyze the bitstream and the decoded video. This paper proposes a framework which enables researchers to train, test and validate their algorithms on a large database of video sequences in such a way that the - often limited - scope of their development can be taken into consideration. A freely available video database for the development of hybrid models is described containing the network bitstreams, parsed information from these bitstreams for easy access, the decoded video sequences, and subjectively evaluated quality scores

Explore, Scale Up, Move Out: Three Phases to Managing Change under Conditions of Uncertainty

Private sector development is dominated by the use of ‘good practice’ solutions, driven by a desire of the development donors to control the outcome of development initiatives – with limited success. Bottom?up participatory approaches are more appropriate to find solutions for the complex challenge of market and private sector development. Theory?based approaches are used to design and deliver solutions to economic development challenges. We argue that these approaches have limited potential to manage interventions that target systemic change in complex contexts. On the other hand, alternative approaches based on emergence have some essential shortcomings from the perspective of the international development system. Based on our own working experience, we propose a pragmatic way forward that aims to build on the strengths of emergence?based approaches in complex contexts but is designed to work in the current development environment

Three Approaches to Monitoring: Feedback Systems, Participatory Monitoring and Evaluation and Logical Frameworks

This article compares key attributes, strengths and weaknesses of three different approaches to monitoring development interventions: the logical framework approach, participatory monitoring and evaluation (PM&E) and feedback systems. Academic and practitioner literature describes how logframes meet the needs of senior decision?makers to summarise, organise and compare projects. PM&E meets the needs of field staff to work sensitively with intended beneficiaries and support their learning and empowerment. Feedback systems appear to link the two, providing performance data for managers and creating incentives for implementing staff to focus on their intended beneficiaries. Feedback systems build on the rich heritage of PM&E and are compatible with logframes. They may help provide a manageable and effective approach to accountability that links the means and the ends of development interventions. Feedback systems are at an early stage of development. There is a lot to learn about how and where they work best

The control of postharvest blue and green molds of citrus in relation with essential oil-wax formulations, adherence and viscosity.

peer reviewedThe use of wax coatings enriched with antifungals has significantly contributed to quality maintaining of harvested citrus fruit. On the other hand, interest in essential oils (EOs) as an alternative to synthetic fungicides has recently gained momentum. In this study, Cinnamomum zeylanicum EO was incorporated into a variety of commercial citrus waxes (shellac, carnauba, paraffin and polyethylene). The biological activity of these formulations against green and blue rots as well as their viscosity and adherence to the orange fruit surface were evaluated. Excellent disease control was achieved with C. zeylanicum EO incorporated in shellac and/or carnauba wax compared to other EO–wax formulations. Disease control by EO–waxes seems to depend not only on the volume that remains on the fruit skin, but also, probably on the retention of EO components on the fruit. Other factors such as formulation solubility, permeability to gases, and compatibility between EO compounds and those of waxes may also be involved in the improvement of EO efficacy. The present study may therefore allow a careful selection of ppropriate waxes for the elaboration of effective EO–wax formulations

Complex, but not quite complex enough : The turn to the complexity sciences in evaluation scholarship

This document is the Accepted Manuscript version of the following article: Chris Mowles, ‘Complex, but not quite complex enough: The turn to the complexity sciences in evaluation scholarship’. The final, definitive version of this paper has been published in Evaluation, Vol. 20 (2): 160-175, April 2014, doi: https://doi.org/10.1177/1356389014527885 , published by SAGE Publishing. All rights reserved.This article offers a critical review of the way in which some scholars have taken up the complexity sciences in evaluation scholarship. I argue that there is a tendency either to over-claim or under-claim their importance because scholars are not always careful about which of the manifestations of the complexity sciences they are appealing to, nor do they demonstrate how they understand them in social terms. The effect is to render ‘complexity’ just another volitional tool in the evaluator’s toolbox subsumed under the dominant understanding of evaluation, as a logical, rational activity based on systems thinking and design. As an alternative I argue for a radical interpretation of the complexity sciences, which understands human interaction as always complex and emergent. The interweaving of intentions in human activity will always bring about outcomes that no one has intended including in the activity of evaluation itself.Peer reviewe