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The operations research method of data envelopment analysis (DEA) shows promise for assessing radiotherapy treatment plan quality. The purpose of this paper is to consider the technical requirements for using DEA for plan assessment.

In total, 41 prostate treatment plans were retrospectively analysed using the DEA method. The authors investigate the impact of DEA weight restrictions with reference to the ability to differentiate plan performance at a level of clinical significance. Patient geometry influences plan quality and the authors compare differing approaches for managing patient geometry within the DEA method.

The input-oriented DEA method is the method of choice when performing plan analysis using the key undesirable plan metrics as the DEA inputs. When considering multiple inputs, it is necessary to constrain the DEA input weights in order to identify potential plan improvements at a level of clinical significance. All tested approaches for the consideration of patient geometry yielded consistent results.

This work is based on prostate plans and individual recommendations would therefore need to be validated for other treatment sites. Notwithstanding, the method that requires both optimised DEA weights according to clinical significance and appropriate accounting for patient geometric factors is universally applicable.

DEA can potentially be used during treatment plan development to guide the planning process or alternatively used retrospectively for treatment plan quality audit.

DEA is independent of the planning system platform and therefore has the potential to be used for multi-institutional quality audit.

To the authors’ knowledge, this is the first published examination of the optimal approach in the use of DEA for radiotherapy treatment plan assessment.

The purpose of this study is to examine how the pressures from stakeholders located in company's country of origin and level of internationalization of the company influence the implementation of socially responsible supply chain management (SR-SCM) practices.

To assess this level of influence, an SR-SCM performance index is developed by building on existing theoretical frameworks and using secondary data from ThomsonReuters’ WorldScope and ASSET4 databases to capture responsible supply chain actions categorized in communication, compliance and supplier development strategies. The analysis is based on 1,252 international companies from diverse countries and sectors between 2007 and 2016.

The effectiveness of stakeholder pressures in facilitating the adoption of socially responsible practices varies greatly with regard to the strategic element of SR-SCM and the type stakeholders considered. Companies that are more internationalized tend to adopt a greater number of SR-SCM practices, whereas home country stakeholders are of diminishing relevance with the increasing internationalization of a company.

Governments in companies’ countries of origin should ensure that social issues in supply chains are adequately covered by regulations. Ideally, laws should not only cover firms’ domestic operations but also their global activities.

Citizens should be given the opportunities to raise their voice and publicly express their disagreement with business misconduct and non-compliance. Apart from that, the role of workers’ associations and investors in the social sustainability debate should be strengthened.

This study contributes to SR-SCM theory development by operationalizing existing conceptual frameworks, showing how domestic stakeholders shape SR-SCM performance and analyzing whether the influence of certain stakeholder groups diminishes or increases when a company is more globally-oriented in its operations.

This paper was formulated to address the impact of different individual decision modes on purchasing managers' satisfaction and find out whether different environments could influence the strength of the relationship between the sourcing managers' individual modes and their decisions.

A new model was built based on the variables selected from literature. Two identical surveys were sent to manufacturing firms in China and Egypt. Around 450 questionnaires have been sent to respondents, and about 300 responses have been collected in the two countries.

The key findings of this study showed that although the influence of decision modes is not changeable across decision-makers in different markets' environment, the strength of the relationship between different individual decision modes and the buying decision significantly differed across different dynamic task environments of buyers.

The research in this paper focused on the purchasing managers' individual decision-making. On the other hand, purchasing managers' market environment is rarely recognized as a main factor affecting their decisions. Furthermore, this research tries to understand more about the supplier selection decision-making in Eastern Asian and Middle Eastern countries.